build: Matrix strategy for release builds ([ElementsProject#7776]).

Also modifies the `build-release.sh` script to optionally
accept specific distribution targets for Ubuntu releases.

.github/workflows/release.yml

@@ -16,6 +16,14 @@ jobs:
   ubuntu-noble:
     name: Release
     runs-on: ubuntu-24.04
+    strategy:
+      fail-fast: false    # Let each build finish.
+      matrix:
+        target:
+          - 'bin-Fedora-28-amd64'
+          - 'bin-Ubuntu-focal'
+          - 'bin-Ubuntu-jammy'
+          - 'bin-Ubuntu-noble'
     steps:
       - name: Git checkout
         uses: actions/checkout@v4
@@ -32,11 +40,19 @@ jobs:
           ./configure
 
       - name: Build environment setup
-        run: contrib/cl-repro.sh
+        run: |
+          distribution="${${{ matrix.target }}#bin-Ubuntu-}"
+          echo "Building base image for ${distribution}"
+          sudo docker run --rm -v $(pwd):/build ubuntu:${distribution} bash -c "\
+              apt-get update && \
+              apt-get install -y debootstrap && \
+              debootstrap ${distribution} /build/${distribution}"
+          sudo tar -C ${distribution} -c . | docker import - ${distribution}
+        if: contains(matrix.target, 'Ubuntu')
 
       - name: Build release
         # TODO: Remove forced version after testing.
-        run: tools/build-release.sh bin-Fedora-28-amd64 bin-Ubuntu
+        run: tools/build-release.sh ${{ matrix.target }}
 
       - name: Upload release artifacts
         uses: actions/upload-artifact@v4

tools/build-release.sh

@@ -153,8 +153,11 @@ for target in $TARGETS; do
         docker run --rm=true -w /build $TAG rm -rf /"$VERSION-$platform" /build
         echo "Fedora Image Built"
         ;;
-    Ubuntu)
-		for d in focal jammy noble; do
+    Ubuntu*)
+        distributions=${platform#Ubuntu-}
+        echo "distributions=$distributions"
+        [ "$distributions" == "Ubuntu" ] && distributions="focal jammy noble"
+		for d in $distributions; do
             # Capitalize the first letter of distro
             D=$(echo "$d" | awk '{print toupper(substr($0,1,1))substr($0,2)}')
 			echo "Building Ubuntu $D Image"

tools/repro-build.sh

@@ -53,6 +53,7 @@ else
     VER=$(uname -r)
 fi
 
+ARCH=$(dpkg --print-architecture)
 PLATFORM="$OS"-"$VER"
 VERSION=${FORCE_VERSION:-$(git describe --tags --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's,.*/clightning-\(v[0-9.rc\-]*\)$,\1,p')}