CI : tags de version sur les images Docker

En plus de :latest, chaque image (frontend + backend) est taguée :
- <version> (semver de package.json, ex. 1.0.0)
- <version>-<build> (numéro de run Gitea, unique/incrémental)
- <sha court> (commit exact)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/docker-build.yml

@@ -17,28 +17,56 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      # Simple login directly with docker login
+      - name: Compute version and image names
+        run: |
+          LOWERCASE_IMAGE=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
+          # Version sémantique lue dans package.json (sans dépendre de node)
+          VERSION=$(sed -n 's/.*"version"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' package.json | head -1)
+          [ -z "$VERSION" ] && VERSION="0.0.0"
+          BUILD="${{ gitea.run_number }}"
+          SHORT_SHA=$(echo "${{ gitea.sha }}" | cut -c1-7)
+          {
+            echo "FRONT=${{ env.REGISTRY }}/$LOWERCASE_IMAGE"
+            echo "BACK=${{ env.REGISTRY }}/$LOWERCASE_IMAGE-backend"
+            echo "VERSION=$VERSION"
+            echo "TAG=$VERSION-$BUILD"
+            echo "SHORT_SHA=$SHORT_SHA"
+          } >> "$GITHUB_ENV"
+          echo "Publication version $VERSION (build $BUILD, commit $SHORT_SHA)"
+
       - name: Log in to the Container registry
         run: echo "${{ secrets.DOCKER_TOKEN }}" | docker login ${{ env.REGISTRY }} -u "${{ gitea.actor }}" --password-stdin
 
       # Frontend image (nginx + SPA)
       - name: Build frontend Docker image
         run: |
-          LOWERCASE_IMAGE=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
-          docker build -t ${{ env.REGISTRY }}/$LOWERCASE_IMAGE:latest .
+          docker build \
+            -t "$FRONT:latest" \
+            -t "$FRONT:$VERSION" \
+            -t "$FRONT:$TAG" \
+            -t "$FRONT:$SHORT_SHA" \
+            .
 
       - name: Push frontend Docker image
         run: |
-          LOWERCASE_IMAGE=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
-          docker push ${{ env.REGISTRY }}/$LOWERCASE_IMAGE:latest
+          docker push "$FRONT:latest"
+          docker push "$FRONT:$VERSION"
+          docker push "$FRONT:$TAG"
+          docker push "$FRONT:$SHORT_SHA"
 
       # Backend image (Express API)
       - name: Build backend Docker image
         run: |
-          LOWERCASE_IMAGE=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
-          docker build -t ${{ env.REGISTRY }}/$LOWERCASE_IMAGE-backend:latest ./server
+          docker build \
+            -t "$BACK:latest" \
+            -t "$BACK:$VERSION" \
+            -t "$BACK:$TAG" \
+            -t "$BACK:$SHORT_SHA" \
+            ./server
 
       - name: Push backend Docker image
         run: |
-          LOWERCASE_IMAGE=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
-          docker push ${{ env.REGISTRY }}/$LOWERCASE_IMAGE-backend:latest
+          docker push "$BACK:latest"
+          docker push "$BACK:$VERSION"
+          docker push "$BACK:$TAG"
+          docker push "$BACK:$SHORT_SHA"