Outdated!
Please consider mix-edib (edib-tool) instead.
Docker image for Erlang/Elixir projects build on a minimal Alpine Linux (base: gliderlabs/alpine)
More info about the base: https://github.com/gliderlabs/docker-alpine
This image still ships the build-base package (GCC + libraries) to make it more convenient for projects which have NIF dependencies.
If you look for an even more stripped down version take a look at asaaki/elixir-pure-alpine (src) instead.