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mix_docker

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Put your Elixir app production release inside minimal docker image

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mix_docker priv Dockerfile.build
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priv/Dockerfile.build 

FROM bitwalker/alpine-erlang:19.3.4



ENV HOME=/opt/app/ TERM=xterm



# Install Elixir and basic build dependencies

RUN \

    echo "@edge http://nl.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories && \

    apk --update upgrade musl && \

    apk --no-cache add \

      git make g++ \

      elixir@edge=1.4.4-r0 && \

    rm -rf /var/cache/apk/*



# Install Hex+Rebar

RUN mix local.hex --force && \

    mix local.rebar --force



WORKDIR /opt/app



ENV MIX_ENV=prod



# Cache elixir deps

RUN mkdir config

COPY config/* config/

COPY mix.exs mix.lock ./

RUN mix do deps.get, deps.compile



COPY . .



RUN mix release --env=prod --verbose