(refactor) extract version check workflows into reusable components

- Create check_package_version.yml reusable workflow
  - Add workspacePath input for flexible package.json location
  - Fix path concatenation to handle root directory cleanly
  - Expose version_changed and version outputs

- Create check_image_version.yml reusable workflow
  - Add workspacePath, imageName, registryUrl, registryUsername, and registryNamespace inputs
  - Make fully generic and portable across different registries
  - Fix path handling for clean path generation
  - Rename secret to registryToken for clarity

- Update build.yml to use reusable workflows
  - Replace inline jobs with workflow_call references
  - Pass all required parameters explicitly
  - Maintain existing conditional logic in build job

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -15,96 +15,23 @@ jobs:
   # Outputs the current version and whether it changed from the last commit
   # This is used to determine if a new release/build is needed
   check_version:
-    runs-on: ubuntu-latest
-    outputs:
-      version_changed: ${{ steps.version-check.outputs.version_changed }}
-      version: ${{ steps.version-check.outputs.version }}
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Check if version changed
-        id: version-check
-        run: |
-          # Get current version
-          CURRENT_VERSION=$(node -p "require('./package.json').version")
-          echo "Current version: $CURRENT_VERSION"
-          echo "version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
-
-          # Check if HEAD~1 exists (handle first commit)
-          if ! git rev-parse HEAD~1 &>/dev/null; then
-            echo "First commit detected, running workflow"
-            echo "version_changed=true" >> $GITHUB_OUTPUT
-            exit 0
-          fi
-
-          # Check if package.json exists in previous commit
-          if ! git show HEAD~1:package.json &>/dev/null; then
-            echo "package.json doesn't exist in previous commit"
-            echo "version_changed=true" >> $GITHUB_OUTPUT
-            exit 0
-          fi
-
-          # Extract previous version using grep/sed (safer than node for old file)
-          PREVIOUS_VERSION=$(git show HEAD~1:package.json | grep '"version"' | head -1 | sed -E 's/.*"version"\s*:\s*"([^"]+)".*/\1/')
-          echo "Previous version: $PREVIOUS_VERSION"
-
-          # Compare versions
-          if [ "$CURRENT_VERSION" != "$PREVIOUS_VERSION" ]; then
-            echo "Version changed: $PREVIOUS_VERSION -> $CURRENT_VERSION"
-            echo "version_changed=true" >> $GITHUB_OUTPUT
-          else
-            echo "Version unchanged: $CURRENT_VERSION"
-            echo "version_changed=false" >> $GITHUB_OUTPUT
-          fi
+    uses: ./.gitea/workflows/check_package_version.yml
+    with:
+      workspacePath: '.'
 
   # Verifies if Docker image with current version already exists in registry
   # This prevents rebuilding the same version but allows pulls and version changes
   # to always trigger new builds. Uses lightweight manifest inspect (no download)
   check_image_version:
-    runs-on: ubuntu-latest
-    outputs:
-      image_exists: ${{ steps.manifest-check.outputs.image_exists }}
-      version: ${{ steps.version-read.outputs.version }}
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Read version from package.json
-        id: version-read
-        run: |
-          VERSION=$(node -p "require('./package.json').version")
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-          echo "Checking for image version: $VERSION"
-
-      - name: Login to Registry
-        run: |
-          echo "${{ secrets.PROFILE_REGISTRY_TOKEN }}" | docker login registry.budakova.org -u "${{ vars.PROFILE_REGISTRY_USERNAME }}" --password-stdin
-
-      - name: Check if image exists in registry
-        id: manifest-check
-        run: |
-          VERSION=${{ steps.version-read.outputs.version }}
-          IMAGE="registry.budakova.org/knee-cola/gitea-actions-demo-project:${VERSION}"
-
-          echo "Checking manifest for image: $IMAGE"
-
-          if docker manifest inspect "$IMAGE" &>/dev/null; then
-            echo "Image exists in registry"
-            echo "image_exists=true" >> $GITHUB_OUTPUT
-          else
-            echo "Image does not exist in registry"
-            echo "image_exists=false" >> $GITHUB_OUTPUT
-          fi
-
-      - name: Summary
-        run: |
-          echo "Version: ${{ steps.version-read.outputs.version }}"
-          echo "Image exists: ${{ steps.manifest-check.outputs.image_exists }}"
+    uses: ./.gitea/workflows/check_image_version.yml
+    with:
+      workspacePath: '.'
+      imageName: 'gitea-actions-demo-project'
+      registryUrl: 'registry.budakova.org'
+      registryUsername: ${{ vars.PROFILE_REGISTRY_USERNAME }}
+      registryNamespace: 'knee-cola'
+    secrets:
+      registryToken: ${{ secrets.PROFILE_REGISTRY_TOKEN }}
 
   # Builds and pushes Docker image to registry if conditions are met:
   # - Version changed in package.json, OR