87 lines
2.2 KiB
Docker
87 lines
2.2 KiB
Docker
# Dockerfile for Dokku deployment
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# Multi-stage build for Phoenix/Elixir app with monorepo layout
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ARG ELIXIR_VERSION=1.18.3
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ARG OTP_VERSION=27.2.4
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ARG DEBIAN_VERSION=bookworm-20260316-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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# =============================================================================
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# Build stage
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# =============================================================================
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FROM ${BUILDER_IMAGE} AS builder
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RUN apt-get update -y && apt-get install -y build-essential git \
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&& apt-get clean && rm -f /var/lib/apt/lists/*_*
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WORKDIR /build
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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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ENV MIX_ENV="prod"
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# Copy blogex dependency first (changes less often)
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COPY blogex /build/blogex
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# Copy app dependency files first for better layer caching
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COPY app/mix.exs app/mix.lock /build/app/
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WORKDIR /build/app
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RUN mix deps.get --only $MIX_ENV
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RUN mkdir config
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# Copy compile-time config files
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COPY app/config/config.exs app/config/${MIX_ENV}.exs config/
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RUN mix deps.compile
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# Copy application source and compile
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COPY app/priv priv
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COPY app/assets assets
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COPY app/lib lib
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COPY app/rel rel
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COPY app/config/runtime.exs config/
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RUN mix compile
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# Build assets after compile (phoenix-colocated hooks need compiled app)
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RUN mix assets.deploy
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# Build the release
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RUN mix release
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# =============================================================================
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# Runtime stage
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# =============================================================================
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FROM ${RUNNER_IMAGE}
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RUN apt-get update -y && \
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apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
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&& apt-get clean && rm -f /var/lib/apt/lists/*_*
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# Set the locale
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RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
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ENV LANG=en_US.UTF-8
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ENV LANGUAGE=en_US:en
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ENV LC_ALL=en_US.UTF-8
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WORKDIR /app
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RUN chown nobody /app
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ENV MIX_ENV="prod"
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# Copy the release from the build stage
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COPY --from=builder --chown=nobody:root /build/app/_build/${MIX_ENV}/rel/firehose ./
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USER nobody
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# Dokku uses the EXPOSE port for routing
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EXPOSE 5000
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ENV PHX_SERVER=true
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CMD ["/app/bin/server"]
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