From 9aef372985b2cecb8c79a9c9cb0714799326ec4b Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Tue, 31 Mar 2026 09:17:10 -0500
Subject: [PATCH] Build wgrib2 v3.6.1 from GitHub source with cmake in Docker

---
 Dockerfile | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 8c627aaa..1c864ef4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,19 +25,20 @@ ARG WGRIB2_VERSION=3.6.1
 
 RUN apt-get update \
   && apt-get install -y --no-install-recommends \
-     build-essential gfortran wget ca-certificates \
+     build-essential gfortran cmake wget ca-certificates git \
      zlib1g-dev libaec-dev libpng-dev \
   && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /tmp/wgrib2
 
-RUN wget -q "https://www.ftp.cpc.ncep.noaa.gov/wd51we/wgrib2/wgrib2.tgz.v${WGRIB2_VERSION}" \
-      -O wgrib2.tgz \
-  && tar xzf wgrib2.tgz \
-  && cd grib2 \
-  && export CC=gcc FC=gfortran \
-  && make \
-  && cp wgrib2/wgrib2 /usr/local/bin/wgrib2 \
+RUN wget -q "https://github.com/NOAA-EMC/wgrib2/archive/refs/tags/v${WGRIB2_VERSION}.tar.gz" \
+      -O wgrib2.tar.gz \
+  && tar xzf wgrib2.tar.gz \
+  && cd wgrib2-${WGRIB2_VERSION} \
+  && mkdir build && cd build \
+  && cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release \
+  && make -j$(nproc) \
+  && make install \
   && strip /usr/local/bin/wgrib2
 
 # ---- Elixir build stage ----