77 lines
1.9 KiB
Docker
77 lines
1.9 KiB
Docker
# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian instead of
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# Alpine to avoid DNS resolution issues in production.
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#
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# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
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# https://hub.docker.com/_/ubuntu?tab=tags
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#
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#
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# This file is based on these images:
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#
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# - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
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# - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image
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# - https://pkgs.org/ - resource for finding needed packages
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# - Ex: hexpm/elixir:1.13.3-erlang-23.2.3-debian-bullseye-20210902-slim
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#
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ARG DOCKER_IMAGE="hexpm/elixir:1.13.3-erlang-23.2.3-alpine-3.15.0"
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FROM ${DOCKER_IMAGE} as builder
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# install build dependencies
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RUN apk add gcc git librdkafka-dev musl-dev
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# prepare build dir
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WORKDIR /app
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# install hex + rebar
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RUN mix local.hex --force && \
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mix local.rebar --force
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# set build ENV
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ENV MIX_ENV="prod"
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# install mix dependencies
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COPY mix.exs mix.lock ./
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RUN mix deps.get --only $MIX_ENV
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RUN mkdir config
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# copy compile-time config files before we compile dependencies
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# to ensure any relevant config change will trigger the dependencies
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# to be re-compiled.
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COPY config/config.exs config/${MIX_ENV}.exs config/
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RUN mix deps.compile
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# Compile the release
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COPY lib lib
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RUN mix compile
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# Changes to config/runtime.exs don't require recompiling the code
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COPY config/runtime.exs config/
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COPY rel rel
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RUN mix release
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# start a new build stage so that the final image will only contain
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# the compiled release and other runtime necessities
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FROM ${DOCKER_IMAGE}
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# Set the locale
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#RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
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#ENV LANG en_US.UTF-8
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#ENV LANGUAGE en_US:en
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#ENV LC_ALL en_US.UTF-8
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WORKDIR "/app"
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RUN chown nobody /app
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# Only copy the final release from the build stage
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COPY --from=builder --chown=nobody:root /app/_build/prod/rel/kafkaex_lag_exporter ./
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USER nobody
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CMD ["/app/bin/server"]
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