Resolve #8 and #9

[rala72]

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• I have read the contributing guideline and understand that I have made the correct modifications

^ This file doesn't exist. - Also, there is no readme-vars.yml, so I made my changes directly in the README

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Description:

This fixes the deprecated sync (#8) and adds an option to disable the watch command (#9).

Benefits of this PR and context:

Even though the watch command is the main goal of this repo, there is now an option to opt-out (#9).
Also, the deprecated command is migrated (#8).

How Has This Been Tested?

Tested directly

Tested it with directly modifying the container and killing the original service:

(Screenshot taken at 10:32, for timestamp references.)

Tested with own image

Tested before with image rala72/plextraktsync-test (on the screenshot, the sleep infinity is missing):

if I run it manually it works, but I don't really get the two logs above - seems like a normal dockerfile build is building the image in a different way or so?
also, the first line is from a different folder which I haven't touched; not sure about the second line
and I haven't found my echo in the container startup protocol 🤔

Conclusion

both test show the expected log line, if I create a NO_WATCH file

are these tests sufficient?
otherwise, does someone have an idea why simply running the docker file results in this bash error or how to fix it?

Source / References:

Issues: #8, #9
https://discord.com/channels/354974912613449730/1226189951490854932/1226189951490854932

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