Tags for docker containers

[finestructure]

I'm currently tagging and pushing lets-nginx images into our own docker repo in order to avoid accidentally pulling silent updates: https://hub.docker.com/r/opencapacity/lets-nginx/

Happy to keep doing that but I thought it might be useful to have those tags in the official repo as well (or instead).

[rgbkrk]

That sounds good to me. Does semver make sense here?

[vlmonk]

Good idea. Tags on main image will be useful.

[finestructure]

@rgbkrk semver sounds good, in fact any unique id should do. As far as I know docker doesn't support doing anything other than selecting exact tags (i.e. no >=0.9) so it shouldn't really matter, at least not for the moment.