v0.6.6 bump and info

* Notify_v2.sh bug fixes

* Clarify notify_v2.sh usage in README.md

* Fix JSON newline handling in Discord and Telegram channels

* Additional error messages when notification templates fail to be sourced

* Additional variable for self-hosted ntfy.sh domain

* Notify_v2.sh additional fixes

* Clarify usage in README.md and notify template comments

* Support sourcing template files from project root

* Add days old message to notification title

* Handle JSON with jq in Discord and Telegram templates

* Tweak notify_v2.sh usage docs and comments

* Remove extra newline from notification body

* replaced jq with jqbin, reodered setting of jqbin, changed source for hostname var

* moved the setting of jqbin a bit further up after further testing

---------

Co-authored-by: Matthew Oleksowicz <matt@everyoneneeds.it>
Co-authored-by: mag37 <robin.ivehult@gmail.com>

.gitignore

@@ -1,5 +1,5 @@
 # ignore users custom notify.sh
-/notify.sh
+/notify*.sh
 /urls.list
 # ignore user config
 /dockcheck.config

README.md

@@ -20,6 +20,20 @@
 ___
 ## :bell: Changelog
 
+- **v0.6.6**: Notify_v2 bugfixes
+    - Clearer readme and error messages
+    - Sourcing templates from either project root or subdirectory
+    - Consistent newline handling
+    - Added (when using `-d`) days old message to notification title
+    - Added ntfy.sh self hosted domain option to config
+    - jq fixes to templates (and properly using $jqbin)
+- **v0.6.5**: Refactored notification logic. See notify_templates/notify_v2.sh for upgrade steps.
+    - Added helper functions to simplify sourcing files and executing functions if they exist.
+    - Created notify_v2.sh wrapper script.
+      - Simplified and consolidated notification logic within notify_v2.sh.
+      - Added support for notification management via environment variables.
+      - Moved notification secrets to **dockcheck.config**.
+    - Added retries to wget/curl to not get empty responses when github is slow.
 - **v0.6.4**: Restructured the update process - first pulls all updates, then recreates all containers.
     - Added logic to skip update check on non-compose containers (unless `-r` option).
     - Added option `-F` to revert to `compose up -d <ContainerName>` targeting specific container and not the stack.
@@ -30,14 +44,6 @@ ___
     - `-M`, Markdown format url-releasenotes in notification (requires template rework, look at gotify!)
     - Added [addons/DSM/README.md](./addons/DSM/README.md) for more info Synology DSM info.
     - Permission checks - graceful exit if no docker permissions + checking if root for pkg-manager.
-- **v0.6.2**: Style and colour changes, prometheus hotfix, new options:
-    - `-u`, Allow auto self update of dockcheck.sh
-    - `-I`, Print container release URLs in the CLI "choose update" list. (please contribute to `urls.list`)
-    - Extras: `-m`, Monochrome mode now hides the progress bar.
-- **v0.6.1**: Hotfixes: (try removing set+shopt+shopt if debugging more errors)
-    - xargs/pipefail, removed `-set -e` bash option for now.
-    - unbound variables fixed (hopefully)
-    - dependency installer from pkgmanager rewritten
 ___
 
 
@@ -58,7 +64,7 @@ Options:
 -F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure).
 -h     Print this Help.
 -i     Inform - send a preconfigured notification.
--I     Prints custom releasenote urls alongside each container with updates (requires urls.list).
+-I     Prints custom releasenote urls alongside each container with updates in CLI output (requires urls.list).
 -l     Only update if label is set. See readme.
 -m     Monochrome mode, no printf colour codes and hides progress bar.
 -M     Prints custom releasenote urls as markdown (requires template support).
@@ -126,11 +132,44 @@ Alternatively create an alias where specific flags and values are set.
 Example `alias dc=dockcheck.sh -p -x 10 -t 3`.
 
 ## :loudspeaker: Notifications
-Trigger with the `-i` flag if `notify.sh` is present and configured.  
+Trigger with the `-i` flag.
-Will send a list of containers with updates available and a notification when `dockcheck.sh` itself has an update.  
+If `notify.sh` is present and configured, it will be used. Otherwise, `notify_v2.sh` will be enabled.
-Run it scheduled with `-ni` to only get notified when there's updates available!  
+Will send a list of containers with updates available and a notification when `dockcheck.sh` itself has an update.
+Run it scheduled with `-ni` to only get notified when there's updates available!
+
+V2 installation and configuration (tag v0.6.5 or later):
+Remove or rename `notify.sh` if previously configured using the legacy method.
+Make certain your project directory is laid out as below. You only need the notify_v2.sh file and any notification templates you wish to enable, but there is no harm in having all of them present.
+```
+ .
+├── notify_templates/
+│   ├── notify_DSM.sh
+│   ├── notify_apprise.sh
+│   ├── notify_discord.sh
+│   ├── notify_generic.sh
+│   ├── notify_gotify.sh
+│   ├── notify_matrix.sh
+│   ├── notify_ntfy-sh.sh
+│   ├── notify_pushbullet.sh
+│   ├── notify_pushover.sh
+│   ├── notify_slack.sh
+│   ├── notify_smtp.sh
+│   ├── notify_telegram.sh
+│   └── notify_v2.sh
+├── dockcheck.config
+├── dockcheck.sh
+└── urls.list         # optional
+```
+If you wish to customize `notify_v2.sh` or the notify templates yourself, you may copy them to your project root directory alongside the main dockcheck.sh script (where they will also be ignored by git).
+Uncomment and set the NOTIFY_CHANNELS environment variable in `dockcheck.config` to a space separated string of your desired notification channels to enable.
+Uncomment and set the environment variables related to the enabled notification channels.
+It is recommended not to make changes directly to the `notify_X.sh` template files within the `notify_templates` subdirectory and instead use only environment variables defined in `dockcheck.config` using this method.
+
+Legacy installation and configuration:
+Use a previous version of a `notify_X.sh` template file (tag v0.6.4 or earlier) from the **notify_templates** directory,
+copy it to `notify.sh` alongside the script, modify it to your needs! (notify.sh is added to .gitignore)
+
 
-Use a `notify_X.sh` template file from the **notify_templates** directory, copy it to `notify.sh` alongside the script, modify it to your needs! (notify.sh is added to .gitignore)  
 **Current templates:**
 - Synology [DSM](https://www.synology.com/en-global/dsm)
 - Email with [mSMTP](https://wiki.debian.org/msmtp) (or deprecated alternative [sSMTP](https://wiki.debian.org/sSMTP))
@@ -250,17 +289,18 @@ function dchk {
 }
 ```
 
+## :warning: `-r flag` disclaimer and warning
+**Wont auto-update the containers, only their images. (compose is recommended)**  
+`docker run` dont support using new images just by restarting a container.  
+Containers need to be manually stopped, removed and created again to run on the new image.  
+Using the `-r` option together with eg. `-i` and `-n` to just check for updates and send notifications and not update is safe though!
+
 ## :hammer: Known issues
 - No detailed error feedback (just skip + list what's skipped).
 - Not respecting `--profile` options when re-creating the container.
 - Not working well with containers created by **Portainer**.
 - **Watchtower** might cause issues due to retagging images when checking for updates (and thereby pulling new images).
 
-## :warning: `-r flag` disclaimer and warning
-**Wont auto-update the containers, only their images. (compose is recommended)**  
-`docker run` dont support using new images just by restarting a container.  
-Containers need to be manually stopped, removed and created again to run on the new image.
-
 ## :wrench: Debugging
 If you hit issues, you could check the output of the `extras/errorCheck.sh` script for clues.
 Another option is to run the main script with debugging in a subshell `bash -x dockcheck.sh` - if there's a particular container/image that's causing issues you can filter for just that through `bash -x dockcheck.sh nginx`.

default.config

@@ -1,9 +1,9 @@
 ### Custom user variables
-# Copy this file to "dockcheck.config" to make it active
+## Copy this file to "dockcheck.config" to make it active
-# Can be placed in ~/.config/ or alongside dockcheck.sh
+## Can be placed in ~/.config/ or alongside dockcheck.sh
-#
+##
-# Uncomment and set your preferred configuration variables here
+## Uncomment and set your preferred configuration variables here
-# This will not be replaced on updates
+## This will not be replaced on updates
 
 #Timeout=10    # Set a timeout (in seconds) per container for registry checkups.
 #MaxAsync=10    # Set max asynchronous subprocesses, 1 default, 0 to disable.
@@ -23,3 +23,55 @@
 #PrintReleaseURL=true   # Prints custom releasenote urls alongside each container with updates (requires urls.list)`
 #PrintMarkdownURL=true    # Prints custom releasenote urls as markdown
 #OnlySpecific=true    # Only compose up the specific container, not the whole compose. (useful for master-compose structure).
+
+### Notify settings
+## All commented values are examples only. Modify as needed.
+##
+## Uncomment the line below and specify the notification channels you wish to enable in a space separated string
+# NOTIFY_CHANNELS="apprise discord DSM generic gotify matrix ntfy-sh pushbullet pushover slack smtp telegram"
+#
+## Uncomment to not send notifications when dockcheck itself has updates.
+# DISABLE_DOCKCHECK_NOTIFICATION=false
+## Uncomment to not send notifications when notify scripts themselves have updates.
+# DISABLE_NOTIFY_NOTIFICATION=false
+#
+## Apprise configuration variables. Set APPRISE_PAYLOAD to make a CLI call or set APPRISE_URL to make an API request instead.
+# APPRISE_PAYLOAD='mailto://myemail:mypass@gmail.com
+#                 mastodons://{token}@{host}
+#                 pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b
+#                 tgram://{bot_token}/{chat_id}/'
+# APPRISE_URL="http://apprise.mydomain.tld:1234/notify/apprise"
+#
+# DISCORD_WEBHOOK_URL="https://discord.com/api/webhooks/<token string>"
+#
+# DSM_SENDMAILTO="me@mydomain.com"
+# DSM_SUBJECTTAG="Email Subject Prefix"
+#
+# GOTIFY_DOMAIN="https://gotify.domain.tld"
+# GOTIFY_TOKEN="token-value"
+#
+# MATRIX_ACCESS_TOKEN="token-value"
+# MATRIX_ROOM_ID="myroom"
+# MATRIX_SERVER_URL="https://matrix.yourdomain.tld"
+#
+## ntfy.sh or your custom domain with no trailing /
+# NTFY_DOMAIN="ntfy.sh"
+# NTFY_TOPIC_NAME="YourUniqueTopicName"
+#
+# PUSHBULLET_URL="https://api.pushbullet.com/v2/pushes"
+# PUSHBULLET_TOKEN="token-value"
+#
+# PUSHOVER_URL="https://api.pushover.net/1/messages.json"
+# PUSHOVER_USER_KEY="userkey"
+# PUSHOVER_TOKEN="token-value"
+#
+# SLACK_CHANNEL_ID=mychannel
+# SLACK_ACCESS_TOKEN=xoxb-token-value
+#
+# SMTP_MAIL_FROM="me@mydomain.tld"
+# SMTP_MAIL_TO="you@yourdomain.tld"
+# SMTP_SUBJECT_TAG="dockcheck"
+#
+# TELEGRAM_CHAT_ID="mychatid"
+# TELEGRAM_TOKEN="token-value"
+# TELEGRAM_TOPIC_ID="0"

dockcheck.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
-VERSION="v0.6.4"
+VERSION="v0.6.6"
-### ChangeNotes: Restructured update process - first pulls all images, then recreates all containers. Added -F option.
+# ChangeNotes: notify_v2 bugfixes - clarify readme and error messages, better sourcing templates, tweaks.
 Github="https://github.com/mag37/dockcheck"
 RawUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh"
 
@@ -14,15 +14,20 @@ ScriptPath="$(readlink -f "$0")"
 ScriptWorkDir="$(dirname "$ScriptPath")"
 
 # Check if there's a new release of the script
-LatestRelease="$(curl -s -r 0-50 "$RawUrl" | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
+LatestRelease="$(curl --retry 3 --retry-delay 1 --retry-max-time 10 -s -r 0-50 "$RawUrl" | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
-LatestChanges="$(curl -s -r 0-200 "$RawUrl" | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
+LatestChanges="$(curl --retry 3 --retry-delay 1 --retry-max-time 10 -s -r 0-200 "$RawUrl" | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
+
+# Source helper functions
+source_if_exists() {
+  if [[ -s "$1" ]]; then source "$1"; fi
+}
+
+source_if_exists_or_fail() {
+  [[ -s "$1" ]] && source "$1"
+}
 
 # User customizable defaults
-if [[ -s "${HOME}/.config/dockcheck.config" ]]; then
+source_if_exists_or_fail "${HOME}/.config/dockcheck.config" || source_if_exists "${ScriptWorkDir}/dockcheck.config"
-  source "${HOME}/.config/dockcheck.config"
-elif [[ -s "${ScriptWorkDir}/dockcheck.config" ]]; then
-  source "${ScriptWorkDir}/dockcheck.config"
-fi
 
 # Help Function
 Help() {
@@ -38,7 +43,7 @@ Help() {
   echo "-F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure)."
   echo "-h     Print this Help."
   echo "-i     Inform - send a preconfigured notification."
-  echo "-I     Prints custom releasenote urls alongside each container with updates (requires urls.list)."
+  echo "-I     Prints custom releasenote urls alongside each container with updates in CLI output (requires urls.list)."
   echo "-l     Only update if label is set. See readme."
   echo "-m     Monochrome mode, no printf colour codes and hides progress bar."
   echo "-M     Prints custom releasenote urls as markdown (requires template support)."
@@ -73,7 +78,7 @@ Stopped=${Stopped:=""}
 CollectorTextFileDirectory=${CollectorTextFileDirectory:-}
 Exclude=${Exclude:-}
 DaysOld=${DaysOld:-}
-OnlySpecific=false
+OnlySpecific=${OnlySpecific:=false}
 SpecificContainer=${SpecificContainer:=""}
 Excludes=()
 GotUpdates=()
@@ -120,14 +125,16 @@ shift "$((OPTIND-1))"
 # Set $1 to a variable for name filtering later
 SearchName="${1:-}"
 
+# Basic notify configuration check
+if [[ "${Notify}" == true ]] && [[ ! -s "${ScriptWorkDir}/notify.sh" ]] && [[ -z "${NOTIFY_CHANNELS:-}" ]]; then
+  printf "Using v2 notifications with -i flag passed but no notify channels configured in dockcheck.config. This will result in no notifications being sent.\n"
+fi
+
 # Setting up options and sourcing functions
 if [[ "$DontUpdate" == true ]]; then AutoMode=true; fi
 if [[ "$MonoMode" == true ]]; then declare c_{red,green,yellow,blue,teal,reset}=""; fi
 if [[ "$Notify" == true ]]; then
-  if [[ -s "${ScriptWorkDir}/notify.sh" ]]; then
+  source_if_exists_or_fail "${ScriptWorkDir}/notify.sh" || source_if_exists_or_fail "${ScriptWorkDir}/notify_templates/notify_v2.sh" || Notify=false
-    source "${ScriptWorkDir}/notify.sh"
-  else Notify=false
-  fi
 fi
 if [[ -n "$Exclude" ]]; then
   IFS=',' read -ra Excludes <<< "$Exclude"
@@ -148,15 +155,23 @@ if [[ -n "$CollectorTextFileDirectory" ]]; then
   fi
 fi
 
+exec_if_exists() {
+  if [[ $(type -t $1) == function ]]; then "$@"; fi
+}
+
+exec_if_exists_or_fail() {
+  [[ $(type -t $1) == function ]] && "$@"
+}
+
 self_update_curl() {
   cp "$ScriptPath" "$ScriptPath".bak
   if command -v curl &>/dev/null; then
-    curl -L $RawUrl > "$ScriptPath"; chmod +x "$ScriptPath"
+    curl --retry 3 --retry-delay 1 --retry-max-time 10 -L $RawUrl > "$ScriptPath"; chmod +x "$ScriptPath"
     printf "\n%b---%b starting over with the updated version %b---%b\n" "$c_yellow" "$c_teal" "$c_yellow" "$c_reset"
     exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
     exit 1 # Exit the old instance
   elif command -v wget &>/dev/null; then
-    wget $RawUrl -O "$ScriptPath"; chmod +x "$ScriptPath"
+    wget --waitretry=1 --timeout=15 -t 10 $RawUrl -O "$ScriptPath"; chmod +x "$ScriptPath"
     printf "\n%b---%b starting over with the updated version %b---%b\n" "$c_yellow" "$c_teal" "$c_yellow" "$c_reset"
     exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
     exit 0 # exit the old instance
@@ -255,8 +270,8 @@ binary_downloader() {
     *) printf "\n%bArchitecture not supported, exiting.%b\n" "$c_red" "$c_reset"; exit 1;;
   esac
   GetUrl="${BinaryUrl/TEMP/"$architecture"}"
-  if command -v curl &>/dev/null; then curl -L "$GetUrl" > "$ScriptWorkDir/$BinaryName";
+  if command -v curl &>/dev/null; then curl --retry 3 --retry-delay 1 --retry-max-time 10 -L "$GetUrl" > "$ScriptWorkDir/$BinaryName";
-  elif command -v wget &>/dev/null; then wget "$GetUrl" -O "$ScriptWorkDir/$BinaryName";
+  elif command -v wget &>/dev/null; then wget --waitretry=1 --timeout=15 -t 10 "$GetUrl" -O "$ScriptWorkDir/$BinaryName";
   else printf "\n%bcurl/wget not available - get %s manually from the repo link, exiting.%b" "$c_red" "$BinaryName" "$c_reset"; exit 1;
   fi
   [[ -f "$ScriptWorkDir/$BinaryName" ]] && chmod +x "$ScriptWorkDir/$BinaryName"
@@ -270,7 +285,7 @@ distro_checker() {
   elif [[ -f /etc/arch-release ]]; then
     [[ "$isRoot" == true ]] && PkgInstaller="pacman -S" || PkgInstaller="sudo pacman -S"
   elif [[ -f /etc/debian_version ]]; then
-    [[ "" == true ]] && PkgInstaller="apt-get install" || PkgInstaller="sudo apt-get install"
+    [[ "$isRoot" == true ]] && PkgInstaller="apt-get install" || PkgInstaller="sudo apt-get install"
   elif [[ -f /etc/redhat-release ]]; then
     [[ "$isRoot" == true ]] && PkgInstaller="dnf install" || PkgInstaller="sudo dnf install"
   elif [[ -f /etc/SuSE-release ]]; then
@@ -317,6 +332,9 @@ dependency_check() {
   ${!AppVar} "$VerFlag" &> /dev/null  || { printf "%s\n" "$AppName is not working - try to remove it and re-download it, exiting."; exit 1; }
 }
 
+dependency_check "regctl" "regbin" "https://github.com/regclient/regclient/releases/latest/download/regctl-linux-TEMP"
+dependency_check "jq" "jqbin" "https://github.com/jqlang/jq/releases/latest/download/jq-linux-TEMP"
+
 # Numbered List function
 # if urls.list exists add release note url per line
 list_options() {
@@ -335,12 +353,12 @@ if [[ "$VERSION" != "$LatestRelease" ]]; then
     [[ "$SelfUpdate" =~ [yY] ]] && self_update
   elif [[ "$AutoMode" == true ]] && [[ "$AutoSelfUpdate" == true ]]; then self_update;
   else
-    [[ "$Notify" == true ]] && { [[ $(type -t dockcheck_notification) == function ]] && dockcheck_notification "$VERSION" "$LatestRelease" "$LatestChanges" || printf "Could not source notification function.\n"; }
+    [[ "$Notify" == true ]] && { exec_if_exists_or_fail dockcheck_notification "$VERSION" "$LatestRelease" "$LatestChanges" || printf "Could not source notification function.\n"; }
   fi
 fi
 
-dependency_check "regctl" "regbin" "https://github.com/regclient/regclient/releases/latest/download/regctl-linux-TEMP"
+# Version check for notify templates
-dependency_check "jq" "jqbin" "https://github.com/jqlang/jq/releases/latest/download/jq-linux-TEMP"
+[[ "$Notify" == true ]] && [[ ! -s "${ScriptWorkDir}/notify.sh" ]] && { exec_if_exists_or_fail notify_update_notification || printf "Could not source notify notification function.\n"; }
 
 # Check docker compose binary
 docker info &>/dev/null || { printf "\n%bYour current user does not have permissions to the docker socket - may require root / docker group. Exiting.%b\n" "$c_red" "$c_reset"; exit 1; }
@@ -457,11 +475,7 @@ unset IFS
 
 # Run the prometheus exporter function
 if [[ -n "${CollectorTextFileDirectory:-}" ]]; then
-  if type -t prometheus_exporter &>/dev/null; then
+  exec_if_exists_or_fail prometheus_exporter ${#NoUpdates[@]} ${#GotUpdates[@]} ${#GotErrors[@]} || printf "%s\n" "Could not source prometheus exporter function."
-    prometheus_exporter ${#NoUpdates[@]} ${#GotUpdates[@]} ${#GotErrors[@]}
-  else
-    printf "%s\n" "Could not source prometheus exporter function."
-  fi
 fi
 
 # Define how many updates are available
@@ -481,7 +495,7 @@ if [[ -n ${GotUpdates[*]:-} ]]; then
   printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
   if [[ -s "$ScriptWorkDir/urls.list" ]] && [[ "$PrintReleaseURL" == true ]]; then releasenotes; else Updates=("${GotUpdates[@]}"); fi
   [[ "$AutoMode" == false ]] && list_options || printf "%s\n" "${Updates[@]}"
-  [[ "$Notify" == true ]] && { type -t send_notification &>/dev/null && send_notification "${GotUpdates[@]}" || printf "\nCould not source notification function.\n"; }
+  [[ "$Notify" == true ]] && { exec_if_exists_or_fail send_notification "${GotUpdates[@]}" || printf "\nCould not source notification function.\n"; }
 fi
 
 # Optionally get updates if there's any
@@ -546,7 +560,7 @@ if [[ -n "${GotUpdates:-}" ]]; then
       ContRestartStack=$($jqbin -r '."mag37.dockcheck.restart-stack"' <<< "$ContLabels")
       [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
       ContOnlySpecific=$($jqbin -r '."mag37.dockcheck.only-specific-container"' <<< "$ContLabels")
-      [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
+      [[ "$ContOnlySpecific" == "null" ]] && ContRestartStack=""
 
       # Checking if compose-values are empty - hence started with docker run
       [[ -z "$ContPath" ]] && continue

notify_templates/notify_DSM.sh

@@ -1,11 +1,12 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_DSM_VERSION="v0.1"
+NOTIFY_DSM_VERSION="v0.2"
 # INFO: ssmtp is deprecated - consider to use msmtp instead.
 #
-# Copy/rename this file to notify.sh to enable the notification snipppet.
 # mSMTP/sSMTP has to be installed and configured manually.
 # The existing DSM Notification Email configuration will be used automatically.
-# Modify to your liking - changing SendMailTo and Subject and content.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set DSM_SENDMAILTO and DSM_SUBJECTTAG in your dockcheck.config file.
 
 MSMTP=$(which msmtp)
 SSMTP=$(which ssmtp)
@@ -18,18 +19,17 @@ else
 	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
 fi
 
-FromHost=$(hostname)
+trigger_DSM_notification() {
-
-trigger_notification() {
 CfgFile="/usr/syno/etc/synosmtp.conf"
 
 # User variables:
 # Automatically sends to your usual destination for synology DSM notification emails.
-# You can also manually override by assigning something else to SendMailTo below.
+# You can also manually override by assigning something else to DSM_SENDMAILTO in dockcheck.config.
-SendMailTo=$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SendMailTo=${DSM_SENDMAILTO:-$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
-#SendMailTo="me@mydomain.com"
+# e.g. DSM_SENDMAILTO="me@mydomain.com"
 
-SubjectTag=$(grep 'eventsubjectprefix' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SubjectTag=${DSM_SUBJECTTAG:-$(grep 'eventsubjectprefix' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
+# e.g. DSM_SUBJECTTAG="Email Subject Prefix"
 SenderName=$(grep 'smtp_from_name' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
 SenderMail=$(grep 'smtp_from_mail' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
 SenderMail=${SenderMail:-$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
@@ -38,7 +38,7 @@ $MailPkg $SendMailTo << __EOF
 From: "$SenderName" <$SenderMail>
 date:$(date -R)
 To: <$SendMailTo>
-Subject: $SubjectTag $MessageTitle $FromHost
+Subject: $SubjectTag $MessageTitle
 Content-Type: text/plain; charset=UTF-8; format=flowed
 Content-Transfer-Encoding: 7bit
 
@@ -48,35 +48,3 @@ __EOF
 # This ensures DSM's container manager will also see the update
 /var/packages/ContainerManager/target/tool/image_upgradable_checker
 }
-
-send_notification() {
-		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-
-		printf "\nSending email notification.\n"
-
-		MessageTitle="Updates available on"
-		# Setting the MessageBody variable here.
-		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
-
-		trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-		printf "\nSending email dockcheck notification.\n"
-
-		MessageTitle="New version of dockcheck available on"
-		# Setting the MessageBody variable here.
-		printf -v MessageBody "Installed version: $1\nLatest version: $2\n\nChangenotes: $3\n"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_DSM.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DSM_VERSION/s/NOTIFY_DSM_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_DSM_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_DSM.sh update avialable:\n $NOTIFY_DSM_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-		trigger_notification
-}

notify_templates/notify_apprise.sh

@@ -1,55 +1,32 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_APPRISE_VERSION="v0.1"
+NOTIFY_APPRISE_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
-# Modify to fit your setup - if API, set AppriseURL to your Apprise ip/domain.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set APPRISE_PAYLOAD in your dockcheck.config file.
+# If API, set APPRISE_URL instead.
 
-FromHost=$(hostname)
+if [[ -z "${APPRISE_PAYLOAD:-}" ]] && [[ -z "${APPRISE_URL:-}" ]]; then
+  printf "Apprise notification channel enabled, but required configuration variables are missing. Apprise notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel apprise
+fi
 
-   ### Modify to fit your setup:
+trigger_apprise_notification() {
-   apprise -vv -t "$MessageTitle" -b "$MessageBody" \
-      mailto://myemail:mypass@gmail.com \
-      mastodons://{token}@{host} \
-      pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
-      tgram://{bot_token}/{chat_id}/
 
-   ### If you use the Apprise-API - Comment out the apprise command above.
+  if [[ -n "${APPRISE_PAYLOAD:-}" ]]; then
-   ### Uncomment the AppriseURL and the curl-line below:
+    apprise -vv -t "$MessageTitle" -b "$MessageBody" \
-   # AppriseURL="http://apprise.mydomain.tld:1234/notify/apprise"
+      ${APPRISE_PAYLOAD}
-   # curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
+  fi
-}
 
-send_notification() {
+  # e.g. APPRISE_PAYLOAD='mailto://myemail:mypass@gmail.com
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+  #                      mastodons://{token}@{host}
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+  #                      pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b
+  #                      tgram://{bot_token}/{chat_id}/'
 
-    printf "\nSending Apprise notification\n"
+  if [[ -n "${APPRISE_URL:-}" ]]; then
-
+    AppriseURL="${APPRISE_URL}"
-    MessageTitle="$FromHost - updates available."
+    curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL # e.g. APPRISE_URL=http://apprise.mydomain.tld:1234/notify/apprise
-    # Setting the MessageBody variable here.
+  fi
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+}
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Apprise dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_apprise.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_APPRISE_VERSION/s/NOTIFY_APPRISE_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_APPRISE_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_apprise.sh update avialable:\n $NOTIFY_APPRISE_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
-}

notify_templates/notify_discord.sh

@@ -1,43 +1,24 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_DISCORD_VERSION="v0.1"
+NOTIFY_DISCORD_VERSION="v0.3"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
-# Modify to fit your setup - set DiscordWebhookUrl
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set DISCORD_WEBHOOK_URL in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${DISCORD_WEBHOOK_URL:-}" ]]; then
+  printf "Discord notification channel enabled, but required configuration variables are missing. Discord notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel discord
-    # Modify to fit your setup:
+fi
-    DiscordWebhookUrl="PasteYourFullDiscordWebhookURL"
 
-    MsgBody="{\"username\":\"$FromHost\",\"content\":\"$MessageBody\"}"
+trigger_discord_notification() {
-    curl -sS -o /dev/null --fail -X POST -H "Content-Type: application/json" -d "$MsgBody" "$DiscordWebhookUrl"
+  DiscordWebhookUrl="${DISCORD_WEBHOOK_URL}" # e.g. DISCORD_WEBHOOK_URL=https://discord.com/api/webhooks/<token string>
-}
+
-
+  JsonData=$( "$jqbin" -n \
-send_notification() {
+              --arg username "$FromHost" \
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+              --arg body "$MessageBody" \
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+              '{"username": $username, "content": $body}' )
-
+
-    printf "\nSending Discord notification\n"
+  curl -sS -o /dev/null --fail -X POST -H "Content-Type: application/json" -d "$JsonData" "$DiscordWebhookUrl"
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Discord dockcheck notification\n"
-    MessageBody="$FromHost - New version of dockcheck available: \n Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_discord.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DISCORD_VERSION/s/NOTIFY_DISCORD_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_DISCORD_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_discord.sh update avialable:\n $NOTIFY_DISCORD_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_generic.sh

@@ -1,44 +1,9 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_GENERIC_VERSION="v0.1"
+NOTIFY_GENERIC_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # generic sample, the "Hello World" of notification addons
 
-FromHost=$(hostname)
+trigger_generic_notification()  {
-
-trigger_notification()  {
-    # Modify to fit your setup:
     printf "\n$MessageTitle\n"
     printf "\n$MessageBody\n"
-}
+}
-
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-
-    # platform specific notification code would go here
-    printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
-    MessageTitle="$FromHost - updates available."
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nGeneric dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_generic.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GENERIC_VERSION/s/NOTIFY_GENERIC_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_GENERIC_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_generic.sh update avialable:\n $NOTIFY_GENERIC_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
-}

notify_templates/notify_gotify.sh

@@ -1,61 +1,32 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_GOTIFY_VERSION="v0.2"
+NOTIFY_GOTIFY_VERSION="v0.3"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
-# Modify to fit your setup - set GotifyUrl and GotifyToken.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set GOTIFY_TOKEN and GOTIFY_DOMAIN in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${GOTIFY_TOKEN:-}" ]] || [[ -z "${GOTIFY_DOMAIN:-}" ]]; then
+  printf "Gotify notification channel enabled, but required configuration variables are missing. Gotify notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel gotify
-    # Modify to fit your setup:
+fi
-    GotifyToken="Your Gotify token here"
-    GotifyUrl="https://api.gotify/message?token=${GotifyToken}"
 
-    if [[ "$PrintMarkdownURL" == true ]]; then
+trigger_gotify_notification() {
-        ContentType="text/markdown"
+  GotifyToken="${GOTIFY_TOKEN}" # e.g. GOTIFY_TOKEN=token-value
-    else
+  GotifyUrl="${GOTIFY_DOMAIN}/message?token=${GotifyToken}" # e.g. GOTIFY_URL=https://gotify.domain.tld
-        ContentType="text/plain"
-    fi
 
-    JsonData=$( jq -n \
+  if [[ "$PrintMarkdownURL" == true ]]; then
-                  --arg body "$MessageBody" \
+      ContentType="text/markdown"
-                  --arg title "$MessageTitle" \
+  else
-                  --arg type "$ContentType" \
+      ContentType="text/plain"
-                  '{message: $body, title: $title, priority: 5, extras: {"client::display": {"contentType": $type}}}' )
+  fi
 
-    curl -s -S --data "${JsonData}" -H 'Content-Type: application/json' -X POST "${GotifyUrl}" 1> /dev/null
+  JsonData=$( "$jqbin" -n \
-}
+                --arg body "$MessageBody" \
-
+                --arg title "$MessageTitle" \
-send_notification() {
+                --arg type "$ContentType" \
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+                '{message: $body, title: $title, priority: 5, extras: {"client::display": {"contentType": $type}}}' )
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
-
+  curl -s -S --data "${JsonData}" -H 'Content-Type: application/json' -X POST "${GotifyUrl}" 1> /dev/null
-    # platform specific notification code would go here
-    printf "\nSending Gotify notification\n"
-
-    # Setting the MessageTitle and MessageBody variable here.
-    MessageTitle="${FromHost} - updates available."
-    printf -v MessageBody "Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Gotify dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_gotify.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GOTIFY_VERSION/s/NOTIFY_GOTIFY_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_GOTIFY_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_gotify.sh update avialable:\n $NOTIFY_GOTIFY_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_matrix.sh

@@ -1,51 +1,23 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_MATRIX_VERSION="v0.1"
+NOTIFY_MATRIX_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
-# Modify to fit your setup - set MatrixServer, Room_id and AccessToken
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set MATRIX_ACCESS_TOKEN, MATRIX_ROOM_ID, and MATRIX_SERVER_URL in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${MATRIX_ACCESS_TOKEN:-}" ]] || [[ -z "${MATRIX_ROOM_ID}:-" ]] || [[ -z "${MATRIX_SERVER_URL}:-" ]]; then
+  printf "Matrix notification channel enabled, but required configuration variables are missing. Matrix notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel matrix
-    # Modify to fit your setup:
+fi
-    AccessToken="Your Matrix token here"
-    Room_id="Enter Room_id here"
-    MatrixServer="Enter Your HomeServer URL"
-    MsgBody="{\"msgtype\":\"m.text\",\"body\":\"$MessageBody\"}"
 
-    # URL Example:  https://matrix.org/_matrix/client/r0/rooms/!xxxxxx:example.com/send/m.room.message?access_token=xxxxxxxx
+trigger_matrix_notification() {
-    curl -sS -o /dev/null --fail -X POST "$MatrixServer/_matrix/client/r0/rooms/$Room_id/send/m.room.message?access_token=$AccessToken" -H 'Content-Type: application/json' -d "$MsgBody"
+  AccessToken="${MATRIX_ACCESS_TOKEN}" # e.g. MATRIX_ACCESS_TOKEN=token-value
-}
+  Room_id="${MATRIX_ROOM_ID}" # e.g. MATRIX_ROOM_ID=myroom
+  MatrixServer="${MATRIX_SERVER_URL}" # e.g. MATRIX_SERVER_URL=http://matrix.yourdomain.tld
+  MsgBody="{\"msgtype\":\"m.text\",\"body\":\"$MessageBody\"}"
 
-send_notification() {
+  # URL Example:  https://matrix.org/_matrix/client/r0/rooms/!xxxxxx:example.com/send/m.room.message?access_token=xxxxxxxx
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+  curl -sS -o /dev/null --fail -X POST "$MatrixServer/_matrix/client/r0/rooms/$Room_id/send/m.room.message?access_token=$AccessToken" -H 'Content-Type: application/json' -d "$MsgBody"
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+}
-
-    # platform specific notification code would go here
-    printf "\nSending Matrix notification\n"
-
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Matrix dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_matrix.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_MATRIX_VERSION/s/NOTIFY_MATRIX_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_MATRIX_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_matrix.sh update avialable:\n $NOTIFY_MATRIX_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
-}

notify_templates/notify_ntfy-sh.sh

@@ -1,57 +1,32 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_NTFYSH_VERSION="v0.2"
+NOTIFY_NTFYSH_VERSION="v0.4"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Setup app and subscription at https://ntfy.sh
-# Use your unique Topic Name in the URL below.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set NTFY_DOMAIN and NTFY_TOPIC_NAME in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${NTFY_DOMAIN:-}" ]] || [[ -z "${NTFY_TOPIC_NAME:-}" ]]; then
+  printf "Ntfy.sh notification channel enabled, but required configuration variables are missing. Ntfy.sh notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel ntfy-sh
-    # Modify to fit your setup:
+fi
-    NtfyUrl="ntfy.sh/YourUniqueTopicName"
 
-    if [[ "$PrintMarkdownURL" == true ]]; then
+trigger_ntfy-sh_notification() {
-        ContentType="Markdown: yes"
+  NtfyUrl="${NTFY_DOMAIN}/${NTFY_TOPIC_NAME}"
-    else
+  # e.g.
-        ContentType="Markdown: no" #text/plain
+  # NTFY_DOMAIN=ntfy.sh
-    fi
+  # NTFY_TOPIC_NAME=YourUniqueTopicName
 
-    curl -sS -o /dev/null --show-error --fail \
+  if [[ "$PrintMarkdownURL" == true ]]; then
-      -H "Title: $MessageTitle" \
+      ContentType="Markdown: yes"
-      -H "$ContentType"      \
+  else
-      -d "$MessageBody" \
+      ContentType="Markdown: no" #text/plain
-      "$NtfyUrl"
+  fi
-}
+
-
+  curl -sS -o /dev/null --show-error --fail \
-send_notification() {
+    -H "Title: $MessageTitle" \
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    -H "$ContentType"      \
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+    -d "$MessageBody" \
-
+    "$NtfyUrl"
-    printf "\nSending ntfy.sh notification\n"
-
-    MessageTitle="$FromHost - updates available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending ntfy.sh dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_ntfy-sh.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_NTFYSH_VERSION/s/NOTIFY_NTFYSH_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_NTFYSH_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_ntfy-sh.sh update avialable:\n $NOTIFY_NTFYSH_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_pushbullet.sh

@@ -1,51 +1,22 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_PUSHBULLET_VERSION="v0.1"
+NOTIFY_PUSHBULLET_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Requires jq installed and in PATH.
-# Modify to fit your setup - set Url and Token.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set PUSHBULLET_TOKEN and PUSHBULLET_URL in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${PUSHBULLET_URL:-}" ]] || [[ -z "${PUSHBULLET_TOKEN:-}" ]]; then
+  printf "Pushbullet notification channel enabled, but required configuration variables are missing. Pushbullet notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel pushbullet
-    # Modify to fit your setup:
+fi
-    PushUrl="https://api.pushbullet.com/v2/pushes"
-    PushToken="Your Pushbullet token here"
 
-    # Requires jq to process json data
+trigger_pushbullet_notification() {
-    jq -n --arg title "$MessageTitle" --arg body "$MessageBody" '{body: $body, title: $title, type: "note"}' | curl -sS -o /dev/null --show-error --fail -X POST -H "Access-Token: $PushToken" -H "Content-type: application/json" $PushUrl -d @-
+  PushUrl="${PUSHBULLET_URL}" # e.g. PUSHBULLET_URL=https://api.pushbullet.com/v2/pushes
-}
+  PushToken="${PUSHBULLET_TOKEN}" # e.g. PUSHBULLET_TOKEN=token-value
-
+
-send_notification() {
+  # Requires jq to process json data
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+  "$jqbin" -n --arg title "$MessageTitle" --arg body "$MessageBody" '{body: $body, title: $title, type: "note"}' | curl -sS -o /dev/null --show-error --fail -X POST -H "Access-Token: $PushToken" -H "Content-type: application/json" $PushUrl -d @-
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-
-    # platform specific notification code would go here
-    printf "\nSending pushbullet notification\n"
-
-    MessageTitle="$FromHost - updates available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending pushbullet dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushbullet.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHBULLET_VERSION/s/NOTIFY_PUSHBULLET_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_PUSHBULLET_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_pushbullet.sh update avialable:\n $NOTIFY_PUSHBULLET_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_pushover.sh

@@ -1,57 +1,28 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_PUSHOVER_VERSION="v0.1"
+NOTIFY_PUSHOVER_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Requires jq installed and in PATH.
-# Modify to fit your setup - set Url and Token.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set PUSHOVER_USER_KEY, PUSHOVER_TOKEN, and PUSHOVER_URL in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${PUSHOVER_URL:-}" ]] || [[ -z "${PUSHOVER_USER_KEY:-}" ]] || [[ -z "${PUSHOVER_TOKEN:-}" ]]; then
+  printf "Pushover notification channel enabled, but required configuration variables are missing. Pushover notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel pushover
-    # Modify to fit your setup:
+fi
-    PushoverUrl="https://api.pushover.net/1/messages.json"
-    PushoverUserKey="Your Pushover User Key Here"
-    PushoverToken="Your Pushover API Token Here"
 
-    # Sending the notification via Pushover
+trigger_pushover_notification() {
-    curl -sS -o /dev/null --show-error --fail -X POST \
+  PushoverUrl="${PUSHOVER_URL}" # e.g. PUSHOVER_URL=https://api.pushover.net/1/messages.json
-        -F "token=$PushoverToken" \
+  PushoverUserKey="${PUSHOVER_USER_KEY}" # e.g. PUSHOVER_USER_KEY=userkey
-        -F "user=$PushoverUserKey" \
+  PushoverToken="${PUSHOVER_TOKEN}" # e.g. PUSHOVER_TOKEN=token-value
-        -F "title=$MessageTitle" \
-        -F "message=$MessageBody" \
-        $PushoverUrl
-}
 
-send_notification() {
+  # Sending the notification via Pushover
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+  curl -sS -o /dev/null --show-error --fail -X POST \
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+      -F "token=$PushoverToken" \
-
+      -F "user=$PushoverUserKey" \
-    # platform specific notification code would go here
+      -F "title=$MessageTitle" \
-    printf "\nSending pushover notification\n"
+      -F "message=$MessageBody" \
-
+      $PushoverUrl
-    MessageTitle="$FromHost - updates available."
+}
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending pushover dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushover.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHOVER_VERSION/s/NOTIFY_PUSHOVER_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_PUSHOVER_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_pushover.sh update avialable:\n $NOTIFY_PUSHOVER_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
-}

notify_templates/notify_slack.sh

@@ -1,52 +1,24 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_SLACK_VERSION="v0.1"
+NOTIFY_SLACK_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh in the same directory as dockcheck.sh to enable the notification snippet.
+# Setup app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
-# Setu app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
-# Add your AccessToken and ChannelID below
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set SLACK_ACCESS_TOKEN, and SLACK_CHANNEL_ID in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${SLACK_ACCESS_TOKEN:-}" ]] || [[ -z "${SLACK_CHANNEL_ID:-}" ]]; then
+  printf "Slack notification channel enabled, but required configuration variables are missing. Slack notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel slack
-    # Modify to fit your setup:
+fi
-    AccessToken="xoxb-not-a-real-token-this-will-not-work"
-    ChannelID="C123456"
-    SlackUrl="https://slack.com/api/chat.postMessage"
 
-    curl -sS -o /dev/null --show-error --fail \
+trigger_slack_notification() {
-      -d "text=$MessageBody" -d "channel=$ChannelID" \
+  AccessToken="${SLACK_ACCESS_TOKEN}" # e.g. SLACK_ACCESS_TOKEN=some-token
-      -H "Authorization: Bearer $AccessToken" \
+  ChannelID="${SLACK_CHANNEL_ID}" # e.g. CHANNEL_ID=mychannel
-      -X POST $SlackUrl
+  SlackUrl="https://slack.com/api/chat.postMessage"
-}
+
-
+  curl -sS -o /dev/null --show-error --fail \
-send_notification() {
+    -d "text=$MessageBody" -d "channel=$ChannelID" \
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    -H "Authorization: Bearer $AccessToken" \
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+    -X POST $SlackUrl
-
-    printf "\nSending Slack notification\n"
-
-    MessageTitle="$FromHost - updates available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Slack dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_slack.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SLACK_VERSION/s/NOTIFY_SLACK_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_SLACK_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_slack.sh update avialable:\n $NOTIFY_SLACK_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_smtp.sh

@@ -1,10 +1,17 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_SMTP_VERSION="v0.1"
+NOTIFY_SMTP_VERSION="v0.2"
 # INFO: ssmtp is depcerated - consider to use msmtp instead.
 #
-# Copy/rename this file to notify.sh to enable the notification snipppet.
 # mSMTP/sSMTP has to be installed and configured manually.
-# Modify to fit your setup - changing SendMailFrom, SendMailTo, SubjectTag
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set SMTP_MAIL_FROM, SMTP_MAIL_TO, and SMTP_SUBJECT_TAG in your dockcheck.config file.
+
+if [[ -z "${SMTP_MAIL_FROM:-}" ]] || [[ -z "${SMTP_MAIL_TO:-}" ]] || [[ -z "${SMTP_SUBJECT_TAG:-}" ]]; then
+  printf "SMTP notification channel enabled, but required configuration variables are missing. SMTP notifications will not be sent.\n"
+
+  remove_channel smtp
+fi
 
 MSMTP=$(which msmtp)
 SSMTP=$(which ssmtp)
@@ -17,13 +24,10 @@ else
 	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
 fi
 
-FromHost=$(hostname)
+trigger_smtp_notification() {
-
+SendMailFrom="${SMTP_MAIL_FROM}" # e.g. MAIL_FROM=me@mydomain.tld
-trigger_notification() {
+SendMailTo="${SMTP_MAIL_TO}" # e.g. MAIL_TO=me@mydomain.tld
-# User variables:
+SubjectTag="${SMTP_SUBJECT_TAG}" # e.g. SUBJECT_TAG=dockcheck
-SendMailFrom="me@mydomain.tld"
-SendMailTo="me@mydomain.tld"
-SubjectTag="dockcheck"
 
 $MailPkg $SendMailTo << __EOF
 From: "$FromHost" <$SendMailFrom>
@@ -37,35 +41,3 @@ $MessageBody
 
 __EOF
 }
-
-send_notification() {
-		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-
-		printf "\nSending email notification.\n"
-
-		MessageTitle="Updates available on"
-		# Setting the MessageBody variable here.
-		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
-
-		trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-		printf "\nSending email dockcheck notification.\n"
-
-		MessageTitle="New version of dockcheck available on"
-		# Setting the MessageBody variable here.
-		printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_smtp.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SMTP_VERSION/s/NOTIFY_SMTP_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_SMTP_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_smtp.sh update avialable:\n $NOTIFY_SMTP_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-		trigger_notification
-}

notify_templates/notify_telegram.sh

@@ -1,58 +1,35 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_TELEGRAM_VERSION="v0.1"
+NOTIFY_TELEGRAM_VERSION="v0.3"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
-# Modify to fit your setup - set TelegramChatId and TelegramToken.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Do not modify this file directly within the "notify_templates" subdirectory. Set TELEGRAM_CHAT_ID and TELEGRAM_TOKEN in your dockcheck.config file.
 
-FromHost=$(hostname)
+if [[ -z "${TELEGRAM_CHAT_ID:-}" ]] || [[ -z "${TELEGRAM_TOKEN:-}" ]]; then
+  printf "Telegram notification channel enabled, but required configuration variables are missing. Telegram notifications will not be sent.\n"
 
-trigger_notification() {
+  remove_channel telegram
+fi
 
-    if [[ "$PrintMarkdownURL" == true ]]; then
+trigger_telegram_notification() {
-        ParseMode="Markdown"
+  if [[ "$PrintMarkdownURL" == true ]]; then
-    else
+      ParseMode="Markdown"
-        ParseMode="HTML"
+  else
-    fi
+      ParseMode="HTML"
+  fi
 
-    # Modify to fit your setup:
+  TelegramToken="${TELEGRAM_TOKEN}" # e.g. TELEGRAM_TOKEN=token-value
-    TelegramToken="Your Telegram token here"
+  TelegramChatId="${TELEGRAM_CHAT_ID}" # e.g. TELEGRAM_CHAT_ID=mychatid
-    TelegramChatId="Your Telegram ChatId here"
+  TelegramUrl="https://api.telegram.org/bot$TelegramToken"
-    TelegramUrl="https://api.telegram.org/bot$TelegramToken"
+  TelegramTopicID=${TELEGRAM_TOPIC_ID:="0"}
-    TelegramTopicID=12345678 ## Set to 0 if not using specific topic within chat
-    TelegramData="{\"chat_id\":\"$TelegramChatId\",\"text\":\"$MessageBody\",\"message_thread_id\":\"$TelegramTopicID\",\"disable_notification\": false}"
 
-    curl -sS -o /dev/null --fail -X POST "$TelegramUrl/sendMessage" -H 'Content-Type: application/json' -d "$TelegramData"
+  JsonData=$( "$jqbin" -n \
-}
+              --arg chatid "$TelegramChatId" \
-
+              --arg text "$MessageBody" \
-send_notification() {
+              --arg thread "$TelegramTopicID" \
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+              --arg parse_mode "$ParseMode" \
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+              '{"chat_id": $chatid, "text": $text, "message_thread_id": $thread, "disable_notification": false, "parse_mode": $parse_mode, "disable_web_page_preview": true}' )
-
+
-    # platform specific notification code would go here
+  curl -sS -o /dev/null --fail -X POST "$TelegramUrl/sendMessage" -H 'Content-Type: application/json' -d "$JsonData"
-    printf "\nSending Telegram notification\n"
-
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
-
-    trigger_notification
-}
-
-### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
-### to not send notifications when dockcheck itself has updates.
-dockcheck_notification() {
-    printf "\nSending Telegram dockcheck notification\n"
-
-    MessageTitle="$FromHost - New version of dockcheck available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "$FromHost - New version of dockcheck available.\n\nInstalled version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-
-    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_telegram.sh"
-    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_TELEGRAM_VERSION/s/NOTIFY_TELEGRAM_VERSION=//p" | tr -d '"')"
-    if [[ "$NOTIFY_TELEGRAM_VERSION" != "$LatestNotifyRelease" ]] ; then
-        printf -v NotifyUpdate "\n\nnotify_telegram.sh update avialable:\n $NOTIFY_TELEGRAM_VERSION -> $LatestNotifyRelease\n"
-        MessageBody="${MessageBody}${NotifyUpdate}"
-    fi
-
-    trigger_notification
 }

notify_templates/notify_v2.sh

@@ -0,0 +1,96 @@
+NOTIFY_V2_VERSION="v0.2"
+#
+# If migrating from an older notify template, remove your existing notify.sh file.
+# Leave (or place) this file in the "notify_templates" subdirectory within the same directory as the main dockcheck.sh script.
+# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
+# Enable and configure all required notification variables in your dockcheck.config file, e.g.:
+# NOTIFY_CHANNELS=apprise gotify slack
+# SLACK_TOKEN=xoxb-some-token-value
+# GOTIFY_TOKEN=some.token
+
+enabled_notify_channels=( ${NOTIFY_CHANNELS:-} )
+
+FromHost=$(cat /etc/hostname)
+
+remove_channel() {
+  local temp_array=()
+  for channel in "${enabled_notify_channels[@]}"; do
+    [[ "${channel}" != "$1" ]] && temp_array+=("${channel}")
+  done
+  enabled_notify_channels=( "${temp_array[@]}" )
+}
+
+for channel in "${enabled_notify_channels[@]}"; do
+  source_if_exists_or_fail "${ScriptWorkDir}/notify_${channel}.sh" || \
+  source_if_exists_or_fail "${ScriptWorkDir}/notify_templates/notify_${channel}.sh" || \
+  printf "The notification channel ${channel} is enabled, but notify_${channel}.sh was not found. Check the ${ScriptWorkDir} directory or the notify_templates subdirectory.\n"
+done
+
+send_notification() {
+  [[ -s "$ScriptWorkDir"/urls.list ]] && releasenotes || Updates=("$@")
+  UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+  UpdToString=${UpdToString%\\n}
+
+  for channel in "${enabled_notify_channels[@]}"; do
+    printf "\nSending ${channel} notification\n"
+
+    # To be added in the MessageBody if "-d X" was used
+    # leading space is left intentionally for clean output
+    [[ -n "$DaysOld" ]] && msgdaysold="with images ${DaysOld}+ days old " || msgdaysold=""
+
+    MessageTitle="$FromHost - updates ${msgdaysold}available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n${UpdToString}\n"
+
+    exec_if_exists_or_fail trigger_${channel}_notification || \
+    printf "Attempted to send notification to channel ${channel}, but the function was not found. Make sure notify_${channel}.sh is available in the ${ScriptWorkDir} directory or notify_templates subdirectory.\n"
+  done
+}
+
+### Set DISABLE_DOCKCHECK_NOTIFICATION=false in dockcheck.config
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+  if [[ ! "${DISABLE_DOCKCHECK_NOTIFICATION:-}" = "true" ]]; then
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1\nLatest version: $2\n\nChangenotes: $3\n"
+
+    if [[ ${#enabled_notify_channels[@]} -gt 0 ]]; then printf "\n"; fi
+    for channel in "${enabled_notify_channels[@]}"; do
+      printf "Sending dockcheck update notification - ${channel}\n"
+      exec_if_exists_or_fail trigger_${channel}_notification || \
+      printf "Attempted to send notification to channel ${channel}, but the function was not found. Make sure notify_${channel}.sh is available in the ${ScriptWorkDir} directory or notify_templates subdirectory.\n"
+    done
+  fi
+}
+
+### Set DISABLE_NOTIFY_UPDATE_NOTIFICATION=false in dockcheck.config
+### to not send notifications when notify scripts themselves have updates.
+notify_update_notification() {
+  if [[ ! "${DISABLE_NOTIFY_UPDATE_NOTIFICATION:-}" = "true" ]]; then
+    update_channels=( "${enabled_notify_channels[@]}" "v2" )
+
+    for notify_script in "${update_channels[@]}"; do
+      upper_channel=$(tr '[:lower:]' '[:upper:]' <<< "$notify_script")
+      VersionVar="NOTIFY_${upper_channel}_VERSION"
+      if [[ -n "${!VersionVar:-}" ]]; then
+        RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_${notify_script}.sh"
+        LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_${upper_channel}_VERSION/s/NOTIFY_${upper_channel}_VERSION=//p" | tr -d '"')"
+        LatestNotifyRelease=${LatestNotifyRelease:-undefined}
+        if [[ ! "${LatestNotifyRelease}" = "undefined" ]]; then
+          if [[ "${!VersionVar}" != "$LatestNotifyRelease" ]] ; then
+            MessageTitle="$FromHost - New version of notify_${notify_script}.sh available."
+
+            printf -v MessageBody "notify_${notify_script}.sh update available:\n ${!VersionVar} -> $LatestNotifyRelease\n"
+
+            for channel in "${enabled_notify_channels[@]}"; do
+              printf "Sending notify_${notify_script}.sh update notification - ${channel}\n"
+              exec_if_exists_or_fail trigger_${channel}_notification || \
+              printf "Attempted to send notification to channel ${channel}, but the function was not found. Make sure notify_${channel}.sh is available in the ${ScriptWorkDir} directory or notify_templates subdirectory.\n"
+            done
+          fi
+        fi
+      fi
+    done
+  fi
+}

notify_templates/urls.list

@@ -1,49 +1,75 @@
-# This is a list of container names and releasenote urls, separated by space.
-# Modify, add and (if necessary) remove to fit your needs.
 # Additions are welcome! Append your list to the git-repo, use generic names and sensible urls.
+# Modify, add and (if necessary) remove to fit your needs.
+# This is a list of container names and releasenote urls, separated by space.
 
-apprise-api https://github.com/linuxserver/docker-apprise-api/releases
-homer https://github.com/bastienwirtz/homer/releases
-nginx https://github.com/docker-library/official-images/blob/master/library/nginx
-vaultwarden-server https://github.com/dani-garcia/vaultwarden/releases
-bruceforce-vaultwarden-backup https://github.com/Bruceforce/vaultwarden-backup/blob/main/CHANGELOG.md
 actual_server https://actualbudget.org/blog
-gotify https://github.com/gotify/server/releases
+apprise-api https://github.com/linuxserver/docker-apprise-api/releases
-traefik https://github.com/traefik/traefik/releases
-caddy https://github.com/caddyserver/caddy/releases
-homarr https://github.com/homarr-labs/homarr/releases
-dozzle https://github.com/amir20/dozzle/releases
-beszel https://github.com/henrygd/beszel/releases
-forgejo https://codeberg.org/forgejo/forgejo/releases
-dockge https://github.com/louislam/dockge/releases
-cup https://github.com/sergi0g/cup/releases
-
-calibre https://github.com/linuxserver/docker-calibre/releases
-calibre-web https://github.com/linuxserver/docker-calibre-web/releases
-readarr https://github.com/Readarr/Readarr/releases
 audiobookshelf https://github.com/advplyr/audiobookshelf/releases
-
-gluetun https://github.com/qdm12/gluetun/releases
 bazarr https://github.com/morpheus65535/bazarr/releases
 bazarr-ls https://github.com/linuxserver/docker-bazarr/releases
+beszel https://github.com/henrygd/beszel/releases
+bookstack https://github.com/BookStackApp/BookStack/releases
+bruceforce-vaultwarden-backup https://github.com/Bruceforce/vaultwarden-backup/blob/main/CHANGELOG.md
+caddy https://github.com/caddyserver/caddy/releases
+calibre https://github.com/linuxserver/docker-calibre/releases
+calibre-web https://github.com/linuxserver/docker-calibre-web/releases
+cleanuperr https://github.com/flmorg/cleanuperr/releases
+cross-seed https://github.com/cross-seed/cross-seed/releases
+cup https://github.com/sergi0g/cup/releases
+dockge https://github.com/louislam/dockge/releases
+dozzle https://github.com/amir20/dozzle/releases
+flatnotes https://github.com/dullage/flatnotes/releases
+forgejo https://codeberg.org/forgejo/forgejo/releases
+fressrss https://github.com/FreshRSS/FreshRSS/releases
+gluetun https://github.com/qdm12/gluetun/releases
+go2rtc https://github.com/AlexxIT/go2rtc/releases
+gotify https://github.com/gotify/server/releases
+hbbr https://github.com/rustdesk/rustdesk-server/releases
+hbbs https://github.com/rustdesk/rustdesk-server/releases
+homarr https://github.com/homarr-labs/homarr/releases
+home-assistant https://github.com/home-assistant/core/releases/
+homer https://github.com/bastienwirtz/homer/releases
+immich_machine_learning https://github.com/immich-app/immich/releases
+immich_postgres https://github.com/tensorchord/VectorChord/releases
+immich_redis https://github.com/valkey-io/valkey/releases
+immich_server https://github.com/immich-app/immich/releases
+jellyfin https://github.com/jellyfin/jellyfin/releases
+jellyseerr https://github.com/Fallenbagel/jellyseerr/releases
+jellystat https://github.com/CyferShepard/Jellystat/releases
+librespeed https://github.com/librespeed/speedtest/releases
+lidarr https://github.com/Lidarr/Lidarr/releases/
+lidarr-ls https://github.com/linuxserver/docker-lidarr/releases
+lubelogger https://github.com/hargata/lubelog/releases
+mattermost https://github.com/mattermost/mattermost/releases
+mealie https://github.com/mealie-recipes/mealie/releases
+meilisearch https://github.com/meilisearch/meilisearch/releases
+monica https://github.com/monicahq/monica/releases
+mqtt https://github.com/eclipse/mosquitto/tags
+nextcloud-aio-mastercontainer https://github.com/nextcloud/all-in-one/releases
+nginx https://github.com/docker-library/official-images/blob/master/library/nginx
+owncast https://github.com/owncast/owncast/releases
 prowlarr https://github.com/Prowlarr/Prowlarr/releases
 prowlarr-ls https://github.com/linuxserver/docker-prowlarr/releases
+qbittorrent https://www.qbittorrent.org/news
+qbittorrent-nox https://www.qbittorrent.org/news
+radarr https://github.com/Radarr/Radarr/releases/
+radarr-ls https://github.com/linuxserver/docker-radarr/releases
+readarr https://github.com/Readarr/Readarr/releases
+readeck https://codeberg.org/readeck/readeck/releases
 recyclarr https://github.com/recyclarr/recyclarr/releases
+roundcubemail https://github.com/roundcube/roundcubemail/releases
 sabnzbd https://github.com/linuxserver/docker-sabnzbd/releases
-sonarr https://github.com/linuxserver/docker-sonarr/releases
+scrutiny https://github.com/AnalogJ/scrutiny/releases
-radarr https://github.com/linuxserver/docker-radarr/releases
+sftpgo https://github.com/drakkan/sftpgo/releases
-lidarr https://github.com/linuxserver/docker-lidarr/releases
-jellyseerr https://github.com/Fallenbagel/jellyseerr/releases
-jellyfin https://github.com/jellyfin/jellyfin/releases
-tautulli https://github.com/Tautulli/Tautulli/releases
-cleanuperr https://github.com/flmorg/cleanuperr/releases
 slskd https://github.com/slskd/slskd/releases
-
+snappymail https://github.com/the-djmaze/snappymail/releases
-home-assistant https://github.com/home-assistant/docker/releases
+sonarr https://github.com/Sonarr/Sonarr/releases/
+sonarr-ls https://github.com/linuxserver/docker-sonarr/releases
+syncthing https://github.com/syncthing/syncthing/releases
+tautulli https://github.com/Tautulli/Tautulli/releases
+thelounge https://github.com/thelounge/thelounge/releases
+traefik https://github.com/traefik/traefik/releases
+vaultwarden-server https://github.com/dani-garcia/vaultwarden/releases
+watchtower https://github.com/beatkind/watchtower/releases
+wud https://github.com/getwud/wud/releases
 zigbee2mqtt https://github.com/Koenkk/zigbee2mqtt/releases
-mqtt https://github.com/eclipse/mosquitto/tags
-
-bookstack https://github.com/BookStackApp/BookStack/releases
-lubelogger https://github.com/hargata/lubelog/releases
-mealie https://github.com/mealie-recipes/mealie/releases
-flatnotes https://github.com/dullage/flatnotes/releases