[Draft] workflow config+prepare-image jobs: omit running empty job

.github/workflows/build-test-distribute.yml

@@ -19,6 +19,7 @@ jobs:
   # use the ${{ needs.config.outputs.bool-param == 'true' }} construction to check boolean values
   config:
     uses: ./.github/workflows/config.yml
+    secrets: inherit
 
   debug-config:
     needs: config
@@ -30,16 +31,6 @@ jobs:
           ${{ toJSON( needs.config.outputs ) }}
           EOF
 
-  prepare-image:
-    needs: config
-    uses: ./.github/workflows/prepare-images.yml
-    with:
-      docker_image_tag:           ${{ needs.config.outputs.docker_image_tag }}
-      need_linux_image_rebuild:   ${{ needs.config.outputs.need_linux_image_rebuild == 'true' }}
-      need_windows_vcpkg_rebuild: ${{ needs.config.outputs.need_windows_vcpkg_rebuild == 'true' }}
-      vcpkg_version:              ${{ needs.config.outputs.vcpkg_version }}
-    secrets: inherit
-
   versioning-and-release-url:
     needs: config
     uses: ./.github/workflows/versioning-release.yml
@@ -52,7 +43,7 @@ jobs:
 
   windows-build-test:
     if: ${{ needs.config.outputs.build_enable_windows == 'true' }}
-    needs: [ config, prepare-image ]
+    needs: [ config ]
     uses: ./.github/workflows/build-test-windows.yml
     with:
       full_config_build:     ${{ needs.config.outputs.full_config_build == 'true' }}
@@ -64,7 +55,7 @@ jobs:
 
   ubuntu-arm64-build-test:
     if: ${{ needs.config.outputs.build_enable_ubuntu_arm64 == 'true' }}
-    needs: [ config, prepare-image ]
+    needs: [ config ]
     uses: ./.github/workflows/build-test-ubuntu-arm64.yml
     with:
       app_version:           ${{ needs.config.outputs.app_version }}
@@ -77,7 +68,7 @@ jobs:
 
   ubuntu-x64-build-test:
     if: ${{ needs.config.outputs.build_enable_ubuntu_x64 == 'true' }}
-    needs: [ config, prepare-image ]
+    needs: [ config ]
     uses: ./.github/workflows/build-test-ubuntu-x64.yml
     with:
       app_version:           ${{ needs.config.outputs.app_version }}
@@ -91,7 +82,7 @@ jobs:
 
   fedora-build-test:
     if: ${{ needs.config.outputs.build_enable_fedora == 'true' }}
-    needs: [ config, prepare-image ]
+    needs: [ config ]
     uses: ./.github/workflows/build-test-fedora.yml
     with:
       app_version:           ${{ needs.config.outputs.app_version }}
@@ -104,7 +95,7 @@ jobs:
 
   emscripten-build-test:
     if: ${{ needs.config.outputs.build_enable_emscripten == 'true' }}
-    needs: [ config, prepare-image ]
+    needs: [ config ]
     uses: ./.github/workflows/build-test-emscripten.yml
     with:
       docker_image_tag: ${{ needs.config.outputs.docker_image_tag }}

.github/workflows/config.yml

@@ -179,3 +179,82 @@ jobs:
           else
             echo "matrix=$(jq -c . < .github/workflows/matrix/ubuntu-x64-minimal-config.json)" >> $GITHUB_OUTPUT
           fi
+
+  linux-image-build-upload:
+    needs: [prepare-config]
+    if: ${{ needs.prepare-config.outputs.linux-changes == 'true' && !contains( github.event.pull_request.labels.*.name, 'skip-image-rebuild' ) }}
+    timeout-minutes: 75
+    strategy:
+      fail-fast: false
+      matrix:
+        distro: [ ubuntu20, ubuntu22, ubuntu24, fedora39, emscripten ]
+        arch: [ x64, arm64 ]
+        exclude:
+          - distro: fedora39
+            arch: arm64
+          - distro: emscripten
+            arch: x64
+        include:
+          - arch: x64
+            image-suffix: ''
+            os: ubuntu-latest
+          - arch: arm64
+            image-suffix: '-arm64'
+            os: [ self-hosted, linux-arm64 ]
+    runs-on: ${{ matrix.os }}
+    env:
+      dockerfile: ${{ matrix.distro }}Dockerfile
+      image: meshlib/meshlib-${{ matrix.distro }}${{ matrix.image-suffix }}:${{ needs.prepare-config.outputs.docker-image-tag }}
+    steps:
+      - name: Remove unused Docker data
+        run: docker system prune --force --all --volumes
+
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: meshlib
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build Linux image
+        run: docker build -f ./docker/${{ env.dockerfile }} -t ${{ env.image }} . --progress=plain
+
+      - name: Push Linux image
+        run: docker push ${{ env.image }}
+
+      - name: Remove unused Docker data
+        run: docker system prune --force --all --volumes
+
+  windows-vcpkg-build-upload:
+    needs: [prepare-config]
+    if: ${{ needs.prepare-config.outputs.windows-changes == 'true' && !contains( github.event.pull_request.labels.*.name, 'skip-image-rebuild' )}}
+    timeout-minutes: 240
+    runs-on: windows-2022
+    steps:
+      - name: Setup vcpkg
+        working-directory: C:\vcpkg
+        run: |
+          git fetch
+          git checkout ${{ inputs.vcpkg_version }}
+          bootstrap-vcpkg.bat
+          vcpkg.exe integrate install
+
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: us-east-1
+
+      - name: Build and cache vcpkg
+        run: .\thirdparty\install.bat --write-s3
+