Add mid layer to reduce dependence on exact gcc version from bootstra…

…p debian

Dockerfile

@@ -1,16 +1,34 @@
-FROM docker.io/debian:12.5 as base
+FROM docker.io/debian:12.5 as bootstrap
 
 RUN apt-get update && apt-get install -y \
     build-essential \
+    ca-certificates \
     git \
     libc6-dev \
     python3
 
 RUN git clone -c feature.manyFiles=true https://github.com/spack/spack.git
 
+ENV PATH="${PATH}:/spack/bin"
+
 COPY spack.yaml /root/spack-env/spack.yaml
 
-RUN ./spack/bin/spack -e /root/spack-env -k --fail-fast install
+RUN /spack/bin/spack -e /root/spack-env concretize
+RUN /spack/bin/spack -e /root/spack-env install --fail-fast
+RUN /spack/bin/spack view symlink /bootstrap-view $(/spack/bin/spack find -H)
+
+
+FROM docker.io/debian:12.5 as base
+
+COPY --from=bootstrap /spack /spack
+COPY --from=bootstrap /bootstrap-view /bootstrap-view
+COPY spack.yaml /root/spack-env/spack.yaml
+
+ENV PATH="/bootstrap-view/bin:/spack/bin:${PATH}"
+
+RUN spack -e /root/spack-env concretize -f
+RUN spack -e /root/spack-env install --fail-fast
+RUN spack gc -e /root/spack-env -y
 
 FROM docker.io/debian:12.5-slim
 

spack.yaml

@@ -5,7 +5,7 @@
 spack:
   specs:
     - coreutils
-    - gcc@12.2.0+binutils
+    - gcc+binutils
     - git
     - gmake
     - patch