Graham McIntire
ffe2034869
The previous attempt to flip `-DUSE_PNG=ON -DUSE_AEC=ON` on wgrib2
broke the image build because wgrib2 v3.6.0's CMakeLists.txt
line 94 forces `find_package(g2c 1.9.0 REQUIRED)` whenever PNG or
JPEG2000 is enabled, and NCEPLIBS-g2c wasn't installed in the
wgrib2-builder stage.
Install NCEPLIBS-g2c v1.9.0 (the version wgrib2 asks for) in the
wgrib2-builder stage ahead of wgrib2 itself, with:
- USE_PNG=ON (needs libpng-dev, already present)
- USE_AEC=ON (needs libaec-dev, already present)
- USE_Jasper=OFF (default ON — would need libjasper-dev
and another runtime dep we don't need)
- USE_OpenJPEG=OFF (same rationale)
- BUILD_G2C=OFF (new experimental API, not needed here)
Then flip wgrib2's PNG/AEC flags back on. wgrib2's binary links
dynamically against libg2c.so so the final stage copies
/usr/local/lib/libg2c.so* from the builder and refreshes the
loader cache with ldconfig.
With the decoder restored, re-add MrmsFetchWorker to the prod
cron in runtime.exs. That worker pulls NOAA MRMS PrecipRate grids
every 2 minutes, which use GRIB2 DRT 5.41 (PNG-compressed) — the
whole reason we needed the PNG decoder in the first place. ASOS
nudges will now have a live radar overlay again.
152 lines
4.7 KiB
Docker
152 lines
4.7 KiB
Docker
# 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-20260316-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:1.19.5-erlang-28.4.1-debian-trixie-20260316-slim
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#
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ARG ELIXIR_VERSION=1.19.5
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ARG OTP_VERSION=28.4.1
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ARG DEBIAN_VERSION=trixie-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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# ---- wgrib2 build stage (cached independently) ----
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FROM ${RUNNER_IMAGE} AS wgrib2-builder
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ARG WGRIB2_VERSION=3.6.0
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ARG G2C_VERSION=1.9.0
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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build-essential gfortran cmake wget ca-certificates pkg-config \
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zlib1g-dev libaec-dev libpng-dev \
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&& rm -rf /var/lib/apt/lists/*
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# NCEPLIBS-g2c: wgrib2 >= 3.x requires this via find_package whenever
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# PNG / JPEG2000 decoders are enabled (wgrib2 CMakeLists:94). We only
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# need PNG (MRMS PrecipRate / native HRRR) + AEC — Jasper/OpenJPEG
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# default to ON in g2c and must be explicitly disabled since libjasper
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# isn't installed in this stage and would pull another runtime dep
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# into the debian-slim runner.
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WORKDIR /tmp/g2c
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RUN wget -q --content-disposition "https://github.com/NOAA-EMC/NCEPLIBS-g2c/archive/refs/tags/v${G2C_VERSION}.tar.gz" \
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-O g2c.tar.gz \
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&& tar xzf g2c.tar.gz \
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&& cd NCEPLIBS-g2c-${G2C_VERSION} \
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&& mkdir build && cd build \
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&& cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local \
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-DCMAKE_BUILD_TYPE=Release \
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-DUSE_PNG=ON \
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-DUSE_AEC=ON \
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-DUSE_Jasper=OFF \
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-DUSE_OpenJPEG=OFF \
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-DBUILD_G2C=OFF \
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&& make -j$(nproc) \
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&& make install
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WORKDIR /tmp/wgrib2
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RUN wget -q --content-disposition "https://github.com/NOAA-EMC/wgrib2/archive/refs/tags/v${WGRIB2_VERSION}.tar.gz" \
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-O wgrib2.tar.gz \
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&& tar xzf wgrib2.tar.gz \
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&& cd wgrib2-${WGRIB2_VERSION} \
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&& mkdir build && cd build \
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&& cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release \
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-DUSE_PNG=ON -DUSE_AEC=ON \
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&& make -j$(nproc) \
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&& make install \
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&& strip /usr/local/bin/wgrib2
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# ---- Elixir build stage ----
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FROM ${BUILDER_IMAGE} AS builder
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# install build dependencies
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends build-essential git \
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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 (changes only when mix.exs/mix.lock change)
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COPY mix.exs mix.lock ./
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COPY vendor vendor
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RUN mix deps.get --only $MIX_ENV
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# copy compile-time config before compiling deps
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RUN mkdir config
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COPY config/config.exs config/${MIX_ENV}.exs config/
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RUN mix deps.compile
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# install esbuild + tailwind binaries (cached until mix.exs changes)
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RUN mix assets.setup
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# create priv dir so :code.priv_dir works at compile time
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# (actual contents copied after compile to avoid cache busting)
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RUN mkdir -p priv/models priv/static
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# copy application code and compile
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COPY lib lib
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COPY algo.md algo.md
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RUN mix compile
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# copy assets and build (JS/CSS changes don't require recompilation)
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COPY assets assets
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RUN mix assets.deploy
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# copy priv contents (migrations, ML model, static files)
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# after compile so model retraining doesn't bust the compile cache
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COPY priv priv
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# runtime config doesn't require recompilation
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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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# ---- Final runtime stage ----
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FROM ${RUNNER_IMAGE} AS final
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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libstdc++6 openssl libncurses6 locales ca-certificates snmp \
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libgfortran5 libaec0 zlib1g libpng16-16t64 \
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&& rm -rf /var/lib/apt/lists/*
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RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
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ENV LANG=en_US.UTF-8
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ENV LANGUAGE=en_US:en
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ENV LC_ALL=en_US.UTF-8
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ENV MIX_ENV="prod"
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WORKDIR "/app"
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RUN chown nobody /app
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COPY --from=wgrib2-builder /usr/local/bin/wgrib2 /usr/local/bin/wgrib2
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# wgrib2 links dynamically against libg2c.so from the builder stage —
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# carry it across and refresh the loader cache so /usr/local/lib is
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# searched at exec time.
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COPY --from=wgrib2-builder /usr/local/lib/libg2c.so* /usr/local/lib/
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RUN ldconfig
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COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/microwaveprop ./
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USER nobody
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CMD ["/app/bin/server"]
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