From e227b41fd7c972fa74e64e9918a0a3724b2a613a Mon Sep 17 00:00:00 2001
From: Matthias Krack <matthias.krack@psi.ch>
Date: Wed, 28 Jan 2026 13:25:39 +0100
Subject: [PATCH] Replace docker file for gcc15 by gcc10

---
 ..._psmp-gcc15 => Dockerfile.make_cp2k_psmp-gcc10} | 14 +++++++-------
 tools/docker/generate_dockerfiles.py               |  4 ++--
 2 files changed, 9 insertions(+), 9 deletions(-)
 rename tools/docker/{Dockerfile.make_cp2k_psmp-gcc15 => Dockerfile.make_cp2k_psmp-gcc10} (77%)

diff --git a/tools/docker/Dockerfile.make_cp2k_psmp-gcc15 b/tools/docker/Dockerfile.make_cp2k_psmp-gcc10
similarity index 77%
rename from tools/docker/Dockerfile.make_cp2k_psmp-gcc15
rename to tools/docker/Dockerfile.make_cp2k_psmp-gcc10
index ecc7d8c8ca..03d70e868c 100644
--- a/tools/docker/Dockerfile.make_cp2k_psmp-gcc15
+++ b/tools/docker/Dockerfile.make_cp2k_psmp-gcc10
@@ -1,6 +1,6 @@
 #
 # This file was created by generate_dockerfiles.py.
-# Usage: ./spack_cache_start.sh; podman build --network=host --shm-size=1g -f ./Dockerfile.make_cp2k_psmp-gcc15 ../../
+# Usage: ./spack_cache_start.sh; podman build --network=host --shm-size=1g -f ./Dockerfile.make_cp2k_psmp-gcc10 ../../
 #
 
 FROM "ubuntu:24.04"
@@ -9,9 +9,9 @@ RUN apt-get update -qq && apt-get install -qq --no-install-recommends \
     bzip2 \
     ca-certificates \
     cmake \
-    g++-15 \
-    gcc-15 \
-    gfortran-15 \
+    g++-10 \
+    gcc-10 \
+    gfortran-10 \
     git \
     gnupg \
     libssh-dev \
@@ -35,9 +35,9 @@ RUN apt-get update -qq && apt-get install -qq --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # Create links in /usr/local/bin to overrule links in /usr/bin
-RUN ln -sf /usr/bin/gcc-15      /usr/local/bin/gcc  && \
-    ln -sf /usr/bin/g++-15      /usr/local/bin/g++  && \
-    ln -sf /usr/bin/gfortran-15 /usr/local/bin/gfortran
+RUN ln -sf /usr/bin/gcc-10      /usr/local/bin/gcc  && \
+    ln -sf /usr/bin/g++-10      /usr/local/bin/g++  && \
+    ln -sf /usr/bin/gfortran-10 /usr/local/bin/gfortran
 
 ARG SPACK_CACHE="s3://spack-cache --s3-endpoint-url=http://localhost:9000"
 
diff --git a/tools/docker/generate_dockerfiles.py b/tools/docker/generate_dockerfiles.py
index 0e302070fc..ad8d7c6700 100755
--- a/tools/docker/generate_dockerfiles.py
+++ b/tools/docker/generate_dockerfiles.py
@@ -56,8 +56,8 @@ def main() -> None:
     with OutputFile(f"Dockerfile.make_cp2k_psmp", args.check) as f:
         f.write(install_make_cp2k("psmp", mpi_mode="mpich"))
 
-    with OutputFile(f"Dockerfile.make_cp2k_psmp-gcc15", args.check) as f:
-        f.write(install_make_cp2k("psmp", mpi_mode="mpich", gcc_version=15))
+    with OutputFile(f"Dockerfile.make_cp2k_psmp-gcc10", args.check) as f:
+        f.write(install_make_cp2k("psmp", mpi_mode="mpich", gcc_version=10))
 
     with OutputFile(f"Dockerfile.make_cp2k_psmp-4x2", args.check) as f:
         testopts = f"--mpiranks=4 --ompthreads=2"