Merge pull request #68 from mag37/selfup_cleanup

selfupdate rework, -v option, syntax cleanup

.gitignore

@@ -0,0 +1,4 @@
+# ignore users custom notify.sh
+/notify.sh
+# ignore the auto-installed regctl
+regctl

README.md

@@ -12,44 +12,57 @@
 </p>
 
 <h3 align="center">A script checking updates for docker images <b>without pulling</b><br>Then selectively auto-update containers.</h3>
-<h4 align="center">With features like excluding specific containers, filter by name, auto-prune dangling images and more.</h4</h3>
+<h2 align="center">Now with a simple Apprise integration!</h2>
+<h4 align="center">With features like excluding specific containers, filter by name, auto-prune dangling images and more.</h4>
 
+___
+## :bell: Changelog
+
+- **v0.4.0**: Reworked selfupdate (auto git/curl/wget), general syntax cleanup, added -v for version.
+- **v0.3.8**: Fixed `--env-file` logic to work with multiple env-files.
+- **v0.3.7**: Added support for [labels](#bookmark-labels), added the `-f` option (force restart stack).
+- **v0.3.6**: Added pushbullet template.
+- **v0.3.5**: Added a simple progress bar for the registry checkup.
+- **v0.3.4**: Added ntfy.sh template and error message on registry fail.
+- **v0.3.3**: Added Apprise template and the option `-i` inform - to send notifications.
+- **v0.3.2**: Added a notify function to wrap a notify-script, currently DSM/Ssmtp + template script.
 
-### :pushpin: Recent changes:
-- **v0.2.4**: Fixed a bug with the Exclude-logic to only exclude exact matches. Added a counter.
-- **v0.2.3**: Added a self updating function (curl/git) and a ugly changenote-message for updates.
-- **v0.2.2**: Fixed breaking errors with multi-compose, odd breakage and working dir error.
-- **v0.2.1**: Added option to exclude a list of containers.
-- **v0.2.1**: Added multi-compose support (eg. override). 
-- **v0.2.0**: Fixed error with container:tag definition. 
-- **v0.1.9:** Fixed custom env-support. 
 ___
 
-## Dependencies:
-Running docker (duh) and compose, either standalone or plugin.   
-[`regclient/regctl`](https://github.com/regclient/regclient) (Licensed under [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0))   
-User will be prompted to download `regctl` if not in `PATH` or `PWD`
+## :nut_and_bolt: Dependencies
+- Running docker (duh) and compose, either standalone or plugin.   
+- [regclient/regctl](https://github.com/regclient/regclient) (Licensed under [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0))   
+  - User will be prompted to download `regctl` if not in `PATH` or `PWD`.   
+  - regctl requires `amd64/arm64` - see [workaround](#roller_coaster-workaround-for-non-amd64--arm64) if other architecture is used.
 ___
 
 
 ![](extras/example.gif)
 
-## `dockcheck.sh`
+## :mag_right: `dockcheck.sh`
 ```
 $ ./dockcheck.sh -h
 Syntax:     dockcheck.sh [OPTION] [part of name to filter]
-Example:    dockcheck.sh -a -e nextcloud,heimdall
+Example:    dockcheck.sh -y -d 10 -e nextcloud,heimdall
 
-Options:
--h     Print this Help.
+Options:"
 -a|y   Automatic updates, without interaction.
+-d N   Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower.
+-e X   Exclude containers, separated by comma.
+-f     Force stack restart after update. Caution: restarts once for every updated container within stack.
+-h     Print this Help.
+-i     Inform - send a preconfigured notification.
+-l     Only update if label is set. See readme.
+-m     Monochrome mode, no printf color codes.
 -n     No updates, only checking availability.
--e     Exclude containers, separated by comma.
 -p     Auto-Prune dangling images after update.
 -r     Allow updating images for docker run, wont update the container.
+-s     Include stopped containers in the check. (Logic: docker ps -a).
+-v     Prints current version.
 ```
 
-Basic example:
+
+### Basic example:
 ```
 $ ./dockcheck.sh
 . . .
@@ -62,33 +75,86 @@ Containers with updates available:
 2) syncthing
 3) whoogle-search
 
-
 Choose what containers to update:
 Enter number(s) separated by comma, [a] for all - [q] to quit:
-
 ```
 Then it proceedes to run `pull` and `up -d` on every container with updates.   
 After the updates are complete, you'll get prompted if you'd like to prune dangling images.
 
-### `-r flag` :warning: disclaimer and warning:
+## :loudspeaker: Notifications
+Trigger with the `-i` flag.   
+Run it scheduled with `-ni` to only get notified when there's updates available!  
+
+Use a `notify_X.sh` template file, copy it to `notify.sh`, modify it to your needs!   
+Current templates:
+- Synology [DSM](https://www.synology.com/en-global/dsm)
+- Email with [sSMTP](https://wiki.debian.org/sSMTP)  
+- Apprise (with it's [multitude](https://github.com/caronc/apprise#supported-notifications) of notifications)
+  - both native [caronc/apprise](https://github.com/caronc/apprise) and the standalone [linuxserver/docker-apprise-api](https://github.com/linuxserver/docker-apprise-api)
+  - Read the [QuickStart](extras/apprise_quickstart.md)
+- [ntfy.sh](https://ntfy.sh/) - HTTP-based pub-sub notifications.
+- [Pushbullet](https://www.pushbullet.com/) - connecting different devices with cross-platform features.
+
+Further additions are welcome - suggestions or PR!   
+<sub><sup>Initiated and first contributed by [yoyoma2](https://github.com/yoyoma2).</sup></sub>  
+
+## :bookmark: Labels
+Optionally add labels to compose-files. Currently these are the usable labels:
+```
+    labels:
+      mag37.dockcheck.restart-stack: true
+      mag37.dockcheck.update: true
+```
+- `mag37.dockcheck.restart-stack: true` works instead of the `-f` option, forcing stop+restart on the whole compose-stack (Caution: Will restart on every updated container within stack).
+- `mag37.dockcheck.update: true` will when used with the `-l` option only update containers with this label and skip the rest. Will still list updates as usual.
+
+## :roller_coaster: Workaround for non **amd64** / **arm64**
+`regctl` provides binaries for amd64/arm64, to use on other architecture you could try this workaround.
+Run regctl in a container wrapped in a shell script. Copied from [regclient/docs/install.md](https://github.com/regclient/regclient/blob/main/docs/install.md):
+
+```sh
+cat >regctl <<EOF
+#!/bin/sh
+opts=""
+case "\$*" in
+  "registry login"*) opts="-t";;
+esac
+docker container run \$opts -i --rm --net host \\
+  -u "\$(id -u):\$(id -g)" -e HOME -v \$HOME:\$HOME \\
+  -v /etc/docker/certs.d:/etc/docker/certs.d:ro \\
+  ghcr.io/regclient/regctl:latest "\$@"
+EOF
+chmod 755 regctl
+```
+Test it with `./regctl --help` and then either add the file to the same path as *dockcheck.sh* or in your path (eg. `~/.local/bin/regctl`).
+
+## :open_hands: Function to auth with docker hub before running
+**Example** - Change names, paths, and remove cat+password flag if you rather get prompted:
+```sh
+function dchk {
+  cat ~/pwd.txt | docker login --username YourUser --password-stdin
+  ~/dockcheck.sh "$@"
+}
+```
+
+## :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.
+
+## :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.
 
-### :hammer: Known issues
-- No detailed error feedback (just skip + list what's skipped) .
-- Not respecting `--profile` options when re-creating the container.
-
-## `dc_brief.sh`
-Just a brief, slimmed down version of the script to only print what containers got updates, no updates or errors.
-
-# License
+## :scroll: License
 dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.
+
+### :floppy_disk: The [story](https://mag37.org/posts/project_dockcheck/) behind it. 1 year in retrospect.
+
 ___
 
-## Check out a spinoff brother-project:
-### [Palleri/DCW](https://github.com/Palleri/DCW) for a WebUI-front with exporters and notifications.
 
-## Special Thanks:
+## Special Thanks
 - :bison: [t0rnis](https://github.com/t0rnis)   
 - :leopard: [Palleri](https://github.com/Palleri)

dockcheck.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
-VERSION="v0.2.4"
-### ChangeNotes: Fixes to the Exclude-option to only exclude exact matches. +cleaning
+VERSION="v0.4.0"
+### ChangeNotes: Reworked selfupdate (auto git/curl/wget), cleanups, -v for version.
 Github="https://github.com/mag37/dockcheck"
 RawUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh"
 
@@ -14,64 +14,86 @@ ScriptWorkDir="$(dirname "$ScriptPath")"
 LatestRelease="$(curl -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")"
 
+
 ### Help Function:
 Help() {
   echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]" 
-  echo "Example:    dockcheck.sh -a -e nextcloud,heimdall"
+  echo "Example:    dockcheck.sh -y -d 10 -e nextcloud,heimdall"
   echo
   echo "Options:"
-  echo "-h     Print this Help."
   echo "-a|y   Automatic updates, without interaction."
+  echo "-d N   Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower."
+  echo "-e X   Exclude containers, separated by comma."
+  echo "-f     Force stack restart after update. Caution: restarts once for every updated container within stack."
+  echo "-h     Print this Help."
+  echo "-i     Inform - send a preconfigured notification."
+  echo "-l     Only update if label is set. See readme."
+  echo "-m     Monochrome mode, no printf color codes."
   echo "-n     No updates, only checking availability."
-  echo "-e     Exclude containers, separated by comma."
   echo "-p     Auto-Prune dangling images after update."
-  echo "-r     Allow updating images for docker run, wont update the container"
+  echo "-r     Allow updating images for docker run, wont update the container."
+  echo "-s     Include stopped containers in the check. (Logic: docker ps -a)."
+  echo "-v     Prints current version."
 }
 
-while getopts "aynprhe:" options; do
+### Colors:
+c_red="\033[0;31m"
+c_green="\033[0;32m"
+c_yellow="\033[0;33m"
+c_blue="\033[0;34m"
+c_teal="\033[0;36m"
+c_reset="\033[0m"
+
+Stopped=""
+while getopts "aynpfrhlisvme:d:" options; do
   case "${options}" in
-    a|y) UpdYes="yes" ;;
-    n) UpdYes="no" ;;
-    r) DrUp="yes" ;;
-    p) PruneQ="yes" ;;
-    e) Exclude=${OPTARG} ;;
-    h|*) Help ; exit 0 ;;
+    a|y) AutoUp="yes" ;;
+    n)   AutoUp="no" ;;
+    r)   DRunUp="yes" ;;
+    p)   AutoPrune="yes" ;;
+    l)   OnlyLabel=true ;;
+    f)   ForceRestartStacks=true ;;
+    i)   [ -s "$ScriptWorkDir"/notify.sh ] && { source "$ScriptWorkDir"/notify.sh ; Notify="yes" ; } ;;
+    e)   Exclude=${OPTARG} ;;
+    m)   declare c_{red,green,yellow,blue,teal,reset}="" ;;
+    s)   Stopped="-a" ;;
+    v)   printf "%s\n" "$VERSION" ; exit 0 ;;
+    d)   DaysOld=${OPTARG}
+         if ! [[ $DaysOld =~ ^[0-9]+$ ]] ; then { printf "Days -d argument given (%s) is not a number.\n" "${DaysOld}" ; exit 2 ; } ; fi ;;
+    h|*) Help ; exit 2 ;;
   esac
 done
 shift "$((OPTIND-1))"
 
-self_update_git() {
-  cd "$ScriptWorkDir" || { printf "Path error, skipping update.\n" ; return ; }
-  [[ $(builtin type -P git) ]] || { printf "Git not installed, skipping update.\n" ; return ; }
-  ScriptUpstream=$(git rev-parse --abbrev-ref --symbolic-full-name "@{upstream}") || { printf "Script not in git directory, choose a different method.\n" ; self_update_select ; return ; }
-  git fetch
-  [ -n "$(git diff --name-only "$ScriptUpstream" "$ScriptName")" ] && {
-    printf "%s\n" "Pulling the latest version."
-   # git checkout "$ScriptUpstream"
-    git pull --force
-    printf "%s\n" "--- starting over with the updated version ---"
-    cd - || { printf "Path error.\n" ; return ; }
-    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
-    exit 1 # exit the old instance
-  }
-  echo "Local is already latest."
-}
 self_update_curl() {
   cp "$ScriptPath" "$ScriptPath".bak
   if [[ $(builtin type -P curl) ]]; then 
     curl -L $RawUrl > "$ScriptPath" ; chmod +x "$ScriptPath"  
-    printf "%s\n" "--- starting over with the updated version ---"
+    printf "\n%s\n" "--- starting over with the updated version ---"
+    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
+    exit 1 # exit the old instance
+  elif [[ $(builtin type -P wget) ]]; then 
+    wget $RawUrl -O "$ScriptPath" ; chmod +x "$ScriptPath"
+    printf "\n%s\n" "--- starting over with the updated version ---"
     exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
     exit 1 # exit the old instance
   else
-    printf "curl not available - download the update manually: %s \n" "$RawUrl"
+    printf "curl/wget not available - download the update manually: %s \n" "$RawUrl"
   fi
 }
-self_update_select() {
-  read -r -p "Choose update procedure (or do it manually) - git/curl/[no]: " SelfUpQ
-  if [[ "$SelfUpQ" == "git" ]]; then self_update_git ;
-  elif [[ "$SelfUpQ" == "curl" ]]; then self_update_curl ; 
-  else printf "Download it manually from the repo: %s \n\n" "$Github"
+
+self_update() {
+  cd "$ScriptWorkDir" || { printf "Path error, skipping update.\n" ; return ; }
+  if [[ $(builtin type -P git) ]] && [[ "$(git ls-remote --get-url)" =~ .*"mag37/dockcheck".* ]] ; then
+    printf "\n%s\n" "Pulling the latest version."
+    git pull --force || { printf "Git error, manually pull/clone.\n" ; return ; }
+    printf "\n%s\n" "--- starting over with the updated version ---"
+    cd - || { printf "Path error.\n" ; return ; }
+    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
+    exit 1 # exit the old instance
+  else
+    cd - || { printf "Path error.\n" ; return ; }
+    self_update_curl
   fi
 }
 
@@ -100,8 +122,36 @@ choosecontainers() {
   printf "\n"
 }
 
+datecheck() {
+  ImageDate=$($regbin image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1 )
+  ImageAge=$(( ( $(date +%s) - $(date -d "$ImageDate" +%s) )/86400 ))
+  if [ "$ImageAge" -gt "$DaysOld" ] ; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+progress_bar() {
+  QueCurrent="$1"
+  QueTotal="$2"
+  ((Percent=100*QueCurrent/QueTotal))
+  ((Complete=50*Percent/100)) # change first number for width (50)
+  ((Left=50-Complete)) # change first number for width (50)
+  BarComplete=$(printf "%${Complete}s" | tr " " "#")
+  BarLeft=$(printf "%${Left}s" | tr " " "-")
+  [[ "$QueTotal" == "$QueCurrent" ]] || printf "\r[%s%s] %s/%s " "$BarComplete" "$BarLeft" "$QueCurrent" "$QueTotal"
+  [[ "$QueTotal" == "$QueCurrent" ]] && printf "\r[%b%s%b] %s/%s \n" "$c_teal" "$BarComplete" "$c_reset" "$QueCurrent" "$QueTotal"
+}
+
 ### Version check & initiate self update
-[[ "$VERSION" != "$LatestRelease" ]] && { printf "New version available! Local: %s - Latest: %s \n Change Notes: %s \n" "$VERSION" "$LatestRelease" "$LatestChanges" ; [[ -z "$UpdYes" ]] && self_update_select ; }
+if [[ "$VERSION" != "$LatestRelease" ]] ; then 
+  printf "New version available! %b%s%b ⇒ %b%s%b \n Change Notes: %s \n" "$c_yellow" "$VERSION" "$c_reset" "$c_green" "$LatestRelease" "$c_reset" "$LatestChanges"
+  if [[ -z "$AutoUp" ]] ; then 
+    read -r -p "Would you like to update? y/[n]: " SelfUpdate
+    [[ "$SelfUpdate" =~ [yY] ]] && self_update
+  fi
+fi
 
 ### Set $1 to a variable for name filtering later.
 SearchName="$1"
@@ -110,7 +160,7 @@ IFS=',' read -r -a Excludes <<< "$Exclude" ; unset IFS
 
 ### Check if required binary exists in PATH or directory:
 if [[ $(builtin type -P "regctl") ]]; then regbin="regctl" ;
-elif [[ -f "./regctl" ]]; then regbin="./regctl" ;
+elif [[ -f "$ScriptWorkDir/regctl" ]]; then regbin="$ScriptWorkDir/regctl" ;
 else
   read -r -p "Required dependency 'regctl' missing, do you want it downloaded? y/[n] " GetDep
   if [[ "$GetDep" =~ [yY] ]] ; then
@@ -121,8 +171,8 @@ else
       *) echo "Architecture not supported, exiting." ; exit 1;;
     esac
     RegUrl="https://github.com/regclient/regclient/releases/latest/download/regctl-linux-$architecture"
-    if [[ $(builtin type -P curl) ]]; then curl -L $RegUrl > ./regctl ; chmod +x ./regctl ; regbin="./regctl" ;
-    elif [[ $(builtin type -P wget) ]]; then wget $RegUrl -O ./regctl ; chmod +x ./regctl ; regbin="./regctl" ;
+    if [[ $(builtin type -P curl) ]]; then curl -L $RegUrl > "$ScriptWorkDir/regctl" ; chmod +x "$ScriptWorkDir/regctl" ; regbin="$ScriptWorkDir/regctl" ;
+    elif [[ $(builtin type -P wget) ]]; then wget $RegUrl -O "$ScriptWorkDir/regctl" ; chmod +x "$ScriptWorkDir/regctl" ; regbin="$ScriptWorkDir/regctl" ;
     else
       printf "%s\n" "curl/wget not available - get regctl manually from the repo link, quitting."
     fi
@@ -156,23 +206,37 @@ done
 
 ### Listing typed exclusions:
 if [[ -n ${Excludes[*]} ]] ; then
-  printf "\n\033[0;34mExcluding these names:\033[0m\n"
+  printf "\n%bExcluding these names:%b\n" "$c_blue" "$c_reset"
   printf "%s\n" "${Excludes[@]}"
   printf "\n"
 fi
 
+# Variables for progress_bar function
+DocCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | wc -l)
+RegCheckQue=0
+
 ### Check the image-hash of every running container VS the registry
-for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
+for i in $(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}') ; do
+  ((RegCheckQue+=1))
+  progress_bar "$RegCheckQue" "$DocCount"
   ### Looping every item over the list of excluded names and skipping:
   for e in "${Excludes[@]}" ; do [[ "$i" == "$e" ]] && continue 2 ; done 
-  printf ". "
   RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
   LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
   ### Checking for errors while setting the variable:
-  if RegHash=$($regbin image digest --list "$RepoUrl" 2>/dev/null) ; then
-    if [[ "$LocalHash" = *"$RegHash"* ]] ; then NoUpdates+=("$i"); else GotUpdates+=("$i"); fi
+  if RegHash=$($regbin image digest --list "$RepoUrl" 2>&1) ; then
+    if [[ "$LocalHash" = *"$RegHash"* ]] ; then 
+      NoUpdates+=("$i") 
+    else 
+      if [[ -n "$DaysOld" ]] && ! datecheck ; then
+        NoUpdates+=("+$i ${ImageAge}d") 
+      else 
+        GotUpdates+=("$i")
+      fi
+    fi
   else
-    GotErrors+=("$i")
+    # Here the RegHash is the result of an error code.
+    GotErrors+=("$i - ${RegHash}")
   fi
 done
 
@@ -187,27 +251,29 @@ UpdCount="${#GotUpdates[@]}"
 
 ### List what containers got updates or not
 if [[ -n ${NoUpdates[*]} ]] ; then
-  printf "\n\033[0;32mContainers on latest version:\033[0m\n"
+  printf "\n%bContainers on latest version:%b\n" "$c_green" "$c_reset"
   printf "%s\n" "${NoUpdates[@]}"
 fi
 if [[ -n ${GotErrors[*]} ]] ; then
-  printf "\n\033[0;31mContainers with errors, wont get updated:\033[0m\n"
+  printf "\n%bContainers with errors, wont get updated:%b\n" "$c_red" "$c_reset"
   printf "%s\n" "${GotErrors[@]}"
+  printf "%binfo:%b 'unauthorized' often means not found in a public registry.%b\n" "$c_blue" "$c_reset"
 fi
 if [[ -n ${GotUpdates[*]} ]] ; then 
-   printf "\n\033[0;33mContainers with updates available:\033[0m\n"
-   [[ -z "$UpdYes" ]] && options || printf "%s\n" "${GotUpdates[@]}"
+   printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
+   [[ -z "$AutoUp" ]] && options || printf "%s\n" "${GotUpdates[@]}"
+   [[ -n "$Notify" ]] && { [[ $(type -t send_notification) == function ]] && send_notification "${GotUpdates[@]}" || printf "Could not source notification function.\n" ; }
 fi
 
 ### Optionally get updates if there's any 
 if [ -n "$GotUpdates" ] ; then
-  if [ -z "$UpdYes" ] ; then
-  printf "\n\033[0;36mChoose what containers to update.\033[0m\n"
+  if [ -z "$AutoUp" ] ; then
+  printf "\n%bChoose what containers to update.%b\n" "$c_teal" "$c_reset"
   choosecontainers
   else
     SelectedUpdates=( "${GotUpdates[@]}" )
   fi
-  if [ "$UpdYes" == "${UpdYes#[Nn]}" ] ; then
+  if [ "$AutoUp" == "${AutoUp#[Nn]}" ] ; then
     NumberofUpdates="${#SelectedUpdates[@]}"
     CurrentQue=0
     for i in "${SelectedUpdates[@]}"
@@ -219,13 +285,15 @@ if [ -n "$GotUpdates" ] ; then
       ContName=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.service" }}')
       ContEnv=$(docker inspect "$i" --format '{{index .Config.Labels "com.docker.compose.project.environment_file" }}')
       ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
+      ContUpdateLabel=$(docker inspect "$i" --format '{{ index .Config.Labels "mag37.dockcheck.update" }}')
+      ContRestartStack=$(docker inspect "$i" --format '{{ index .Config.Labels "mag37.dockcheck.restart-stack" }}')
       ### Checking if compose-values are empty - hence started with docker run:
       if [ -z "$ContPath" ] ; then 
-        if [ "$DrUp" == "yes" ] ; then
+        if [ "$DRunUp" == "yes" ] ; then
           docker pull "$ContImage"
           printf "%s\n" "$i got a new image downloaded, rebuild manually with preferred 'docker run'-parameters"
         else
-          printf "\n\033[33;1m%s\033[0m has no compose labels, probably started with docker run - \033[33;1mskipping\033[0m\n\n" "$i"
+          printf "\n%b%s%b has no compose labels, probably started with docker run - %bskipping%b\n\n" "$c_yellow" "$i" "$c_reset" "$c_yellow" "$c_reset"
         fi
         continue 
       fi
@@ -237,22 +305,34 @@ if [ -n "$GotUpdates" ] ; then
       fi
       ### cd to the compose-file directory to account for people who use relative volumes, eg - ${PWD}/data:data
       cd "$ContPath" || { echo "Path error - skipping $i" ; continue ; }
-      printf "\n\033[0;36mNow updating (%s/%s): \033[0;34m%s\033[0m\n" "$CurrentQue" "$NumberofUpdates" "$i"
+      printf "\n%bNow updating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      ### Checking if Label Only -option is set, and if container got the label
+      [[ "$OnlyLabel" == true ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping." ; continue ; } }
       docker pull "$ContImage"
       ### Reformat for multi-compose:
       IFS=',' read -r -a Confs <<< "$ComposeFile" ; unset IFS
       for conf in "${Confs[@]}"; do CompleteConfs+="-f $conf " ; done 
-      
       ### Check if the container got an environment file set, use it if so:
       if [ -n "$ContEnv" ]; then 
-        $DockerBin ${CompleteConfs[@]} --env-file "$ContEnv" up -d "$ContName" # unquoted array to allow split - rework?
+        ### prepare env-files arguments
+        ContEnvs=$(for env in ${ContEnv//,/ } ; do printf -- "--env-file %s " "$env"; done)
+        ### Check if the whole stack should be restarted
+        if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]] ; then 
+          $DockerBin ${CompleteConfs[@]} stop ; $DockerBin ${CompleteConfs[@]} ${ContEnvs} up -d 
+        else
+          $DockerBin ${CompleteConfs[@]} ${ContEnvs} up -d "$ContName" # unquoted array to allow split - rework?
+        fi
       else
-        $DockerBin ${CompleteConfs[@]} up -d "$ContName" # unquoted array to allow split - rework?
+        if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]] ; then 
+          $DockerBin ${CompleteConfs[@]} stop ; $DockerBin ${CompleteConfs[@]} up -d
+        else
+          $DockerBin ${CompleteConfs[@]} up -d "$ContName"
+        fi
       fi
     done
-    printf "\033[0;32mAll done!\033[0m\n"
-    [[ -z "$PruneQ" ]] && read -r -p "Would you like to prune dangling images? y/[n]: " PruneQ
-    [[ "$PruneQ" =~ [yY] ]] && docker image prune -f 
+    printf "\n%bAll done!%b\n" "$c_green" "$c_reset"
+    [[ -z "$AutoPrune" ]] && read -r -p "Would you like to prune dangling images? y/[n]: " AutoPrune
+    [[ "$AutoPrune" =~ [yY] ]] && docker image prune -f 
   else
     printf "\nNo updates installed, exiting.\n"
   fi
@@ -261,3 +341,4 @@ else
 fi
 
 exit 0
+

extras/apprise_quickstart.md

@@ -0,0 +1,130 @@
+# A small guide on getting started with Apprise notifications.
+
+
+## Standalone docker container: [linuxserver/apprise-api](https://hub.docker.com/r/linuxserver/apprise-api)
+
+Set up the docker compose as preferred:
+```yaml
+---
+version: "2.1"
+services:
+  apprise-api:
+    image: lscr.io/linuxserver/apprise-api:latest
+    container_name: apprise-api
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=Etc/UTC
+    volumes:
+      - /path/to/apprise-api/config:/config
+    ports:
+      - 8000:8000
+    restart: unless-stopped
+```
+
+Then browse to the webui.
+![](apprise-ex1.png)
+Here you'll click **Configuration Manager**, read the overview and then click on **Configuration**.
+Under **Configuration** you'll craft/paste your notification config. 
+
+![](apprise-ex2.png)
+The simplest way is just paste the url's as is (like in the example above).    
+There are many ways to customize with tags, groups, json and more. Read [caronc/apprise-api](https://github.com/caronc/apprise-api) for more info!   
+
+Look at the [apprise wiki: Notification Services](https://github.com/caronc/apprise/wiki) for more info about how the url syntax for different services works.   
+
+
+You can also use the [caronc/apprise-api](https://github.com/caronc/apprise-api) to host the api as a frontend to an already existing **Apprise**-setup on the host.
+
+
+### Customize the **notify.sh** file.
+After you're done with the setup of the container and tried your notifications, you can copy the `notify_apprise.sh` file to `notify.sh` and start editing it.
+
+Comment out/remove the bare metal apprise-command (starting with `apprise -vv -t...`). 
+Uncomment and edit the `AppriseURL` variable and *curl* line
+It should look something like this when curling the API:
+```bash
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending Apprise notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+AppriseURL="http://IP.or.mydomain.tld:8000/notify/apprise"
+curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
+
+}
+```
+
+That's all!
+___
+___
+
+
+## On host installed **Apprise**
+Follow the official guide on [caronc/apprise](https://github.com/caronc/apprise)! 
+
+### A brief, basic "get started"
+
+- Install **apprise** 
+    - python package `pip install apprise`
+    - packaged in EPEL/Fedora `dnf install apprise`
+    - packaged in AUR `[yay/pikaur/paru/other] apprise`
+
+- Create a config file with your notification credentials (source of notifications):
+```ini
+mailto://user:password@yahoo.com
+slack://token_a/token_b/token_c
+kodi://example.com
+```
+Then either source the notifications with `-c=/path/to/config/apprise` or store them in *PATH* to skip referencing (`~/.apprise` or `~/.config/apprise`).
+
+- Test apprise with a single notification:
+    - `apprise -vv -t 'test title' -b 'test notification body' 'mailto://myemail:mypass@gmail.com'`
+- Set up your notification URL's and test them.
+    - Look at the [apprise wiki: Notification Services](https://github.com/caronc/apprise/wiki) for more info about how the url syntax for different services works.   
+
+### When done, customize the **notify.sh** file.
+After you're done with the setup of the container and tried your notifications, you can copy the `notify_apprise.sh` file to `notify.sh` and start editing it.
+
+Replace the url's corresponding to the services you've configured.
+```bash
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending Apprise notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+# Modify to fit your setup:
+apprise -vv -t "$MessageTitle" -b "$MessageBody" \
+   mailto://myemail:mypass@gmail.com \
+   mastodons://{token}@{host} \
+   pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
+   tgram://{bot_token}/{chat_id}/
+
+}
+```
+
+That's all!
+___
+___

notify_DSM.sh

@@ -0,0 +1,34 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# Copy/rename this file to notify.sh to enable email notifications on Synology DSM
+# DSM Notification Email has to be configured manually.
+# Modify to your liking - changing SendMailTo and Subject and content.
+
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+# User variables:
+# change this to your usual destination for synology DSM notification emails
+SendMailTo="me@mydomain.com"
+SubjectTag="diskstation"
+
+printf "\nSending email notification.\n"
+
+ssmtp $SendMailTo << __EOF
+From: "$FromHost" <$SendMailTo>
+date:$(date -R)
+To: <$SendMailTo>
+Subject: [$SubjectTag] Updates available on $FromHost
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+The following containers on $FromHost have updates available:
+
+$UpdToString
+
+ From $FromHost
+
+__EOF
+}

notify_apprise.sh

@@ -0,0 +1,37 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# 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.
+
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending Apprise notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+# Modify to fit your setup:
+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.
+### Uncomment the AppriseURL and the curl-line below:
+# AppriseURL="http://apprise.mydomain.tld:1234/notify/apprise"
+# curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
+
+}
+
+

notify_generic.sh

@@ -0,0 +1,14 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# generic sample, the "Hello World" of notification addons
+
+send_notification() {
+  Updates=("$@")
+  UpdToString=$( printf "%s\n" "${Updates[@]}" )
+  FromHost=$(hostname)
+
+  # platform specific notification code would go here
+  printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
+  printf "\nThe following docker containers on %s need to be updated:\n%s\n" "$FromHost" "$UpdToString"
+}

notify_ntfy-sh.sh

@@ -0,0 +1,31 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# 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.
+
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending ntfy.sh notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+# Modify to fit your setup:
+NtfyUrl="ntfy.sh/YourUniqueTopicName"
+
+curl -sS -o /dev/null --show-error --fail \
+  -H "Title: $MessageTitle" \
+  -d "$MessageBody" \
+  $NtfyUrl
+
+}

notify_pushbullet.sh

@@ -0,0 +1,27 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# 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.
+
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+# platform specific notification code would go here
+printf "\nSending pushbullet notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+MessageBody="Containers on $FromHost with updates available: $UpdToString"
+
+# Modify to fit your setup:
+PushUrl="https://api.pushbullet.com/v2/pushes"
+PushToken="Your Pushbullet token here"
+
+# Requires jq to process json data
+jq -n --arg title "$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 @-
+
+}

notify_ssmtp.sh

@@ -0,0 +1,32 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# Copy/rename this file to notify.sh to enable the notification snipppet.
+# sSMTP has to be installed and configured manually.
+# Modify to fit your setup - changing SendMailFrom, SendMailTo, SubjectTag
+
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+# User variables:
+SendMailFrom="me@mydomain.tld"
+SendMailTo="me@mydomain.tld"
+SubjectTag="dockcheck"
+
+printf "\nSending email notification.\n"
+
+ssmtp $SendMailTo << __EOF
+From: "$FromHost" <$SendMailFrom>
+date:$(date -R)
+To: <$SendMailTo>
+Subject: [$SubjectTag] Updates available on $FromHost
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+The following containers on $FromHost have updates available:
+
+$UpdToString
+
+__EOF
+}

notify_telegram.sh

@@ -0,0 +1,26 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+#
+# 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.
+
+send_notification() {
+    Updates=("$@")
+    UpdToString=$( printf "%s\n" "${Updates[@]}" )
+    FromHost=$(hostname)
+    
+    # platform specific notification code would go here
+    printf "\nSending Telegram notification\n"
+    
+    # Setting the MessageBody variable here.
+    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
+    
+    # Modify to fit your setup:
+    TelegramToken="Your Telegram token here"
+    TelegramChatId="Your Telegram ChatId here"
+    TelegramUrl="https://api.telegram.org/bot$TelegramToken"
+    TelegramData="{\"chat_id\":\"$TelegramChatId\",\"text\":\"$MessageBody\",\"disable_notification\": false}"
+    
+    curl -sS -o /dev/null --fail -X POST "$TelegramUrl/sendMessage" -H 'Content-Type: application/json' -d "$TelegramData"
+    
+}