131 lines
3.9 KiB
Docker
131 lines
3.9 KiB
Docker
# syntax=docker/dockerfile:1.4
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# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
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# instead of Alpine to avoid DNS resolution issues in production.
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#
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# https://hub.docker.com/r/hexpm/elixir/tags?name=ubuntu
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# https://hub.docker.com/_/ubuntu/tags
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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/tags?name=trixie-20251229-slim - for the release image
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# - https://pkgs.org/ - resource for finding needed packages
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# - Ex: docker.io/hexpm/elixir:1.20.2-erlang-29.0.3-debian-trixie-20260713-slim
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#
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ARG ELIXIR_VERSION=1.20.2
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ARG OTP_VERSION=29.0.3
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ARG DEBIAN_VERSION=trixie-20260713-slim
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ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
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ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"
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FROM ${BUILDER_IMAGE} AS builder
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ENV MIX_OS_DEPS_COMPILE_PARTITION_COUNT=3
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# Enable parallel compilation with 3 cores
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ENV ELIXIR_ERL_OPTIONS="+JPperf true"
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ENV ERL_AFLAGS="-kernel shell_history enabled"
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# Disable TTY for cross-architecture builds
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ENV TERM=dumb
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# install build dependencies
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RUN apt-get update \
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&& DEBIAN_FRONTEND=noninteractive apt-get upgrade -y \
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&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends build-essential git curl libsnmp-dev \
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&& rm -rf /var/lib/apt/lists/*
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# prepare build dir
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WORKDIR /app
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# set build ENV
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ENV MIX_ENV="prod"
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# install hex + rebar (must use cache mounts so they persist into subsequent cache-mounted steps)
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RUN --mount=type=cache,target=/root/.hex \
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--mount=type=cache,target=/root/.mix \
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mix local.hex --force \
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&& mix local.rebar --force
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# install mix dependencies
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COPY mix.exs mix.lock ./
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COPY vendor vendor
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RUN --mount=type=cache,target=/root/.hex \
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--mount=type=cache,target=/root/.mix \
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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 --mount=type=cache,target=/root/.hex \
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--mount=type=cache,target=/root/.mix \
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mix deps.compile
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RUN --mount=type=cache,target=/root/.mix \
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--mount=type=cache,target=/root/.npm \
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mix assets.setup
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COPY priv priv
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COPY c_src c_src
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# Compile the C NIF before Elixir compilation
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RUN cd c_src && make
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COPY lib lib
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# Compile the release
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RUN --mount=type=cache,target=/root/.mix \
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mix compile
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COPY assets assets
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# compile assets
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RUN --mount=type=cache,target=/root/.mix \
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mix assets.deploy
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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 --mount=type=cache,target=/root/.mix \
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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 ${RUNNER_IMAGE} AS final
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RUN apt-get update \
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&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends libstdc++6 openssl libncurses6 locales ca-certificates iputils-ping snmp libsnmp40 libsctp1 \
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&& rm -rf /var/lib/apt/lists/*
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# Set the locale
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RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen \
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&& locale-gen
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ENV LANG=en_US.UTF-8
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ENV LANGUAGE=en_US:en
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ENV LC_ALL=en_US.UTF-8
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WORKDIR "/app"
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RUN chown nobody /app
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# set runner ENV
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ENV MIX_ENV="prod"
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# Only copy the final release from the build stage
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COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/towerops ./
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USER nobody
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# If using an environment that doesn't automatically reap zombie processes, it is
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# advised to add an init process such as tini via `apt-get install`
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# above and adding an entrypoint. See https://github.com/krallin/tini for details
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# ENTRYPOINT ["/tini", "--"]
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# Health check for container orchestration
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HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
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CMD ["/app/bin/towerops", "rpc", "1 + 1"]
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CMD ["/app/bin/server"]
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