github actions: Add Debian Testing build

.github/workflows/build.yml

@@ -145,3 +145,71 @@ jobs:
 
       - name: cppcheck
         run: cppcheck --enable=warning,style,performance,portability,information,missingInclude -i'gtk-layer-shell-build' .
+
+  debian-testing-build:
+    runs-on: ubuntu-latest
+    container: debian:testing
+
+    env:
+      CC: ccache gcc
+      CXX: ccache g++
+      BASE_INSTALL_PATH: ${{github.workspace}}/_install
+
+    steps:
+      - name: Setup environment
+        run: |
+          echo "PATH=${BASE_INSTALL_PATH}/bin:${PATH}" >> "$GITHUB_ENV"
+          echo "PKG_CONFIG_PATH=${BASE_INSTALL_PATH}/lib/pkgconfig:${PKG_CONFIG_PATH}" >> "$GITHUB_ENV"
+
+      - name: Show environment
+        run: env | sort
+        if: ${{ env.DEBUG == '1' }}
+
+      - name: Install dependencies
+        run: |
+          apt-get update -qq
+          apt-get install --assume-yes --no-install-recommends \
+            ${BUILD_DEPS} ${LIBRARY_DEPS}
+
+      - uses: actions/checkout@v3
+        with:
+          path: mate-panel
+          submodules: true
+
+      - name: Checkout mate-desktop
+        uses: actions/checkout@v3
+        with:
+          repository: mate-desktop/mate-desktop
+          ref: v1.27.1
+          path: mate-desktop
+          submodules: true
+
+      - name: ccache
+        uses: hendrikmuhs/[email protected]
+
+      - name: Configure mate-desktop
+        run: |
+          cd mate-desktop
+          NOCONFIGURE=1 ./autogen.sh
+          { ./configure --prefix="$BASE_INSTALL_PATH" || { cat config.log; exit 1; } ; }
+
+      - name: Build mate-desktop
+        run: make -C mate-desktop -j ${{ env.JOBS }}
+
+      - name: Install mate-desktop
+        run: make -C mate-desktop -j ${{ env.JOBS }} install
+
+      - name: Configure
+        run: |
+          cd mate-panel
+          NOCONFIGURE=1 ./autogen.sh
+          { ./configure || { cat config.log; exit 1; } ; }
+
+      - name: Build
+        run: make -C mate-panel -j ${{ env.JOBS }}
+
+      - name: Run Tests
+        run: make -C mate-panel -j ${{ env.JOBS }} check
+
+      - name: Run distcheck
+        run: make -C mate-panel -j ${{ env.JOBS }} distcheck