Add option for unattended upgrades

[Noki]

I would love to see an option (ENV variable) that allows the container to automatically upgrade itself to the latest version. With a cronjob and "flexget -V" it should be possible to detect that a newer version is available and then the container could just restart itself, which is currently the upgrade method.

[cpoppema]

Hello @Noki I guess it would indeed be fairly simple to compare the versions output by flexget -V.
Killing the flexget container (gracefully if at all possible) from the inside would rely on either docker run --restart unless-stopped or its equivalent in a docker-compose.yml. I don't think it will work with "regular" docker create and start commands (without an external process manager like systemd/supervisor). How are you starting your container ?

[Noki]

Currently I do it using the UI of my Synology NAS. It's basically docker run --restart unless-stopped. In addition I use Ouroboros (https://github.com/pyouroboros/ouroboros) to automatically update some containers that change and that are usually safe to update automatically.

Automatically updating the the docker-flexget container / repo for every new flexget version would probably be the best choice because it would than work with Ouroboros or Watchtower. I think you could automate it with GitHub Actions, however I have never done this myself.

[opicron]

I am using watchtower on the synology and every docker is nicely updated all the time. By far the best solution.