153 lines
4.5 KiB
Text
153 lines
4.5 KiB
Text
ARG ELIXIR_VERSION=1.18.4
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ARG OTP_VERSION=27.2.4
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ARG DEBIAN_VERSION=bullseye-20250520-slim
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ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
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# Use static distroless image with only statically linked binaries
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ARG RUNNER_IMAGE="gcr.io/distroless/static-debian11:nonroot"
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FROM ${BUILDER_IMAGE} AS builder
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# install build dependencies
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RUN apt-get update -y && \
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apt-get upgrade -y && \
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apt-get install -y build-essential git && \
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apt-get clean && \
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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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# 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 $MIX_ENV
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RUN mkdir config
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# copy compile-time config files before we compile dependencies
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COPY config/config.exs config/${MIX_ENV}.exs config/
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RUN mix deps.compile
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COPY priv priv
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COPY lib lib
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COPY assets assets
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# compile assets
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RUN mix assets.deploy
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# Compile the release
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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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# Create intermediate stage to prepare statically linked binaries
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FROM debian:bullseye-slim AS static-builder
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# Install tools to create static binaries
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RUN apt-get update -y && \
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apt-get install -y --no-install-recommends \
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musl-tools \
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musl-dev \
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upx-ucl \
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file \
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&& apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# Copy the release from builder
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COPY --from=builder /app/_build/prod/rel/aprs /app
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# Create a wrapper script that can be statically linked
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RUN cat > /wrapper.c << 'EOF'
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#include <unistd.h>
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#include <sys/wait.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char *argv[]) {
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char *args[] = {"/app/bin/server", "start", NULL};
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execv("/app/bin/server", args);
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perror("execv failed");
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return 1;
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}
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EOF
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# This approach won't work well with Erlang/Elixir as they require dynamic linking
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# Let's use a different approach with a minimal runtime environment
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# Runtime preparation stage
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FROM debian:bullseye-slim AS runtime-prep
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# Install only the absolute minimum runtime dependencies
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RUN apt-get update -y && \
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apt-get install -y --no-install-recommends \
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libc6 \
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libssl1.1 \
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libcrypto++6 \
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libncurses5 \
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libtinfo5 \
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ca-certificates \
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&& apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# Copy necessary libraries to a clean location
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RUN mkdir -p /runtime/lib/x86_64-linux-gnu /runtime/usr/lib/x86_64-linux-gnu /runtime/etc/ssl
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# Copy essential libraries
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RUN cp -L /lib/x86_64-linux-gnu/libc.so.6 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /lib/x86_64-linux-gnu/libdl.so.2 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /lib/x86_64-linux-gnu/libpthread.so.0 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /lib/x86_64-linux-gnu/libm.so.6 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /lib/x86_64-linux-gnu/librt.so.1 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /lib/x86_64-linux-gnu/libtinfo.so.5 /runtime/lib/x86_64-linux-gnu/ && \
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cp -L /usr/lib/x86_64-linux-gnu/libssl.so.1.1 /runtime/usr/lib/x86_64-linux-gnu/ && \
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cp -L /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 /runtime/usr/lib/x86_64-linux-gnu/ && \
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cp -L /usr/lib/x86_64-linux-gnu/libncurses.so.5 /runtime/usr/lib/x86_64-linux-gnu/ && \
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cp -L /lib64/ld-linux-x86-64.so.2 /runtime/lib64/ || mkdir -p /runtime/lib64 && cp -L /lib64/ld-linux-x86-64.so.2 /runtime/lib64/
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# Copy CA certificates
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RUN cp -r /etc/ssl/certs /runtime/etc/ssl/
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# Final static distroless stage
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FROM ${RUNNER_IMAGE}
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# Copy minimal runtime environment
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COPY --from=runtime-prep /runtime /
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# Set environment variables
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ENV MIX_ENV="prod" \
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LANG=C.UTF-8 \
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PATH="/app/bin:$PATH" \
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HISTFILE=/dev/null \
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HOME=/tmp \
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ERL_AFLAGS="+S 1:1 +A 1 +K true" \
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PHX_SERVER=true
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WORKDIR /app
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# Copy the Elixir release
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COPY --from=builder --chown=65532:65532 /app/_build/prod/rel/aprs ./
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# Security labels
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LABEL org.opencontainers.image.vendor="APRS.me" \
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org.opencontainers.image.title="APRS.me Server (Static Distroless)" \
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org.opencontainers.image.description="APRS.me server with static distroless base - maximum security" \
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security.distroless="true" \
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security.static="true" \
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security.nonroot="true" \
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security.no-shell="true"
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# Note: Static distroless is very restrictive and may not work with all Erlang features
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# Consider using cc-debian11:nonroot for better compatibility
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ENTRYPOINT ["/app/bin/server"]
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EXPOSE $PORT
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