Adding a source URL label to Dockerfile

[frantathefranta]

Hi, would it be possible to add this to the Dockerfile?:

LABEL org.opencontainers.image.source="https://github.com/karlomikus/bar-assistant"

The reason for this change being that renovatebot/renovate cannot currently fetch the changelog, as the docker image name differs from the Github repo address. I didn't open a pull request as it seems like a very minor change but I can it's easier. Obviously it'd be nice to apply this to salt-rim as well.

[zhdenny]

Hey, what do you do with renovate in relation to Bar Assistant? Like how are these related? Just curious if this is something I'd like to use for other apps

[frantathefranta]

I run bar assistant in a Kubernetes cluster, which is directed by a git repo, where renovate runs to keep everything up-to-date.

[frantathefranta]

Thanks @karlomikus, works great!