These are some common Dockerfiles we use at Operable for various things.
docker build -t operable/alpine-base:0.1 . -f Dockerfile.alpine-base
docker build -t operable/elixir:1.3.1 . -f Dockerfile.elixir
For things like alpine-base, we can just bump versions like normal.
For things like the elixir, go, and whatever other language-based
images we make, the first part of the tag will be the language's own
version (e.g. 1.3.1 for Elixir), and we'll add a suffix for any
material changes we make to the image apart from that; perhaps
1.3.1-r0 was our original image, but then we changed our base image
to add additional utilities, so we then build a 1.3.1-r1 image to
reflect this.
The makefile has build targets for making images. You'll want to tweak the release tag before you build. We'll make this nicer soon.