Need reproducible containers for Hamilton dedup/decoding

[gtfierro]

The way we currently deploy these services, they pull the latest code from github, which can lead to breaking changes (such as if the config file changes and the driver doesn't use defaults).

We need to build containers for these services that removes this potential issue

[immesys]

I think one solution to this is the same as what I mentioned for performance reasons: when you build a container locally, commit it and use that when autorestarting it or recovering from system restart.

Another solution is what kubernetes does: tell people to specify containers with versions and leave it at that. The problem is that the whole "specify a github repository and we build it" thing is actually very useful. Perhaps an option to say git+http://<repo>@<commithash> ?