mag37 95a603cdc3 chooseRework,pruneAdd,regctlChecks ...

Fixes:
- Checks if curl/wget exist to not get an empty `regctl` binary.
    - Extra check if `regctl` binary is functional before continuing.
- changed shebang to `#!/usr/bin/env bash` for portability.
- General cleaning. (y/n checks and space saving)

New:
- Rework of the `choosecontainers` function
    - `[aA]` to update ALL (was `0` before and part of the list/array)
    - numbers starting from 1 (instead of 0)
    - will prompt for new choice if picking numbers/letters out of bound.

- `docker prune` option after completed updates.
    - additionally a`-p` flag for automatic update+prune, eg `./dockcheck.sh -yp`

- Added [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.

2023-02-15 13:16:31 +01:00

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