116 lines
4.9 KiB
Text
116 lines
4.9 KiB
Text
# syntax=docker/dockerfile:1.6
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#
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# Pre-built runtime base image for the Elixir app. Contains:
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# * Debian trixie-slim with locale set to en_US.UTF-8
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# * Runtime apt deps for the BEAM + Erlang ssl + snmp
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# * `cdo` + `gdal-bin` (~1 GB dep tree, the slowest install)
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# * `wgrib2` (compiled here from source against NCEPLIBS-g2c v2.3.0)
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#
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# Built by `.forgejo/workflows/build-base.yaml` only when this file or
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# the workflow changes. The app `Dockerfile` does `FROM prop-base` so
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# everyday code pushes skip the wgrib2 compile and apt-install entirely.
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#
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# Bumping wgrib2 or g2c: change the ARGs below and push — the base
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# workflow rebuilds and re-tags `:latest`. The app Dockerfile follows
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# `:latest`, so the next app push picks it up automatically.
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ARG DEBIAN_VERSION=trixie-20260518-slim
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ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"
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# ---- wgrib2 build stage (cached independently inside this image) ----
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FROM ${RUNNER_IMAGE} AS wgrib2-builder
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ARG WGRIB2_VERSION=3.8.0
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# wgrib2 3.6.0 has a memory-corruption bug exposed by HRDPS rotated
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# lat/lon GRIB2 files plus -lon point extraction (denormal garbage
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# values, then `free(): invalid size`). Reproduced in the production
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# pod against an HRDPS sample on 2026-04-30; 3.8.0 fixes it.
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# g2c v2.3.0 is the minimum wgrib2 3.8.0's CMakeLists demands via
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# find_package, and the first release where BUILD_G2C defaults ON.
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ARG G2C_VERSION=2.3.0
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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rm -f /etc/apt/apt.conf.d/docker-clean \
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&& 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 libopenjp2-7-dev
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# NCEPLIBS-g2c carries the actual JPEG2000 / PNG / AEC GRIB2 decoders
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# that wgrib2 dispatches to via USE_G2CLIB_LOW. Jasper is disabled
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# (CVE-laden, dropped from Debian).
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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-${G2C_VERSION} \
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&& mkdir build && cd build \
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&& cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local \
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-DCMAKE_BUILD_TYPE=Release \
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-DUSE_PNG=ON \
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-DUSE_AEC=ON \
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-DUSE_OpenJPEG=ON \
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-DUSE_Jasper=OFF \
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&& make -j$(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_AEC=ON -DUSE_G2CLIB_LOW=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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# ---- Final runtime base ----
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FROM ${RUNNER_IMAGE} AS base
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# Weekly cron passes CACHE_BUST=<iso year+week> so the apt layers below
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# re-execute and pick up Debian security patches. Source-controlled
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# pushes leave the value at its `none` default, so day-to-day base
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# rebuilds (Dockerfile.base edits) don't pay the apt-update cost
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# unless the week has rolled over.
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#
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# Note: the registry occasionally GCs base-image blobs that the
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# manifest still references (saw this 2026-05-04 — `final 1/5 FROM
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# prop-base:latest` failed with "could not fetch content descriptor
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# … not found"). When that happens, push any change to this file to
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# re-trigger the build-base workflow and re-upload the layers.
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ARG CACHE_BUST=none
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# Runtime apt deps. cdo + gdal-bin are split into a second RUN so a
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# transient cdo install failure doesn't invalidate the smaller base
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# layer above. Referencing `${CACHE_BUST}` in the RUN line changes the
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# layer hash week-to-week without altering the install set.
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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echo "cache-bust=${CACHE_BUST}" \
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&& rm -f /etc/apt/apt.conf.d/docker-clean \
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&& apt-get update \
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&& apt-get install -y --no-install-recommends \
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libstdc++6 openssl libncurses6 locales ca-certificates snmp \
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libgfortran5 libaec0 zlib1g libpng16-16t64 libopenjp2-7 libsctp1
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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echo "cache-bust=${CACHE_BUST}" \
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&& rm -f /etc/apt/apt.conf.d/docker-clean \
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&& apt-get update \
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&& apt-get install -y --no-install-recommends cdo gdal-bin
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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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# wgrib2 binary + dynamic g2c lib. ldconfig refreshes the loader cache
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# so /usr/local/lib is searched at exec time without LD_LIBRARY_PATH.
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COPY --from=wgrib2-builder /usr/local/bin/wgrib2 /usr/local/bin/wgrib2
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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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