Example Dockerfile for a release

Dockerfile

FROM bitwalker/alpine-erlang:latest
MAINTAINER Paul Schoenfelder <paulschoenfelder@gmail.com>

ENV REFRESHED_AT=2016-06-21 \
    HOME=/opt/app/ \
    MIX_ENV=prod \
    TERM=xterm \
    REPLACE_OS_VARS=true

EXPOSE 5000

WORKDIR ${HOME}

RUN \
    echo "@edge http://nl.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories && \
    apk --no-cache --update add elixir@edge git && \
    mix local.hex --force && \
    mix local.rebar --force

COPY mix.exs mix.lock ./
RUN mix do deps.get, deps.compile

ENV APP_VERSION=0.1.0

COPY . .
RUN mix do compile, release --verbose --env=prod && \
    mkdir -p /opt/myapp/log && \
    cp rel/myapp/releases/$APP_VERSION/myapp.tar.gz /opt/myapp/ && \
    cd /opt/myapp && \
    tar -xzf myapp.tar.gz && \
    rm myapp.tar.gz && \
    rm -rf /opt/app/* && \
    chmod -R 777 /opt/app && \
    chmod -R 777 /opt/myapp

WORKDIR /opt/myapp

CMD ./bin/myapp foreground