ci(release): dual trigger (tags + release) and correct TAG wiring (#75)

Author: CoderDeltaLAN

.github/workflows/release.yml

@@ -1,31 +1,44 @@
 name: release
 on:
+  push:
+    tags: ['v*']          # cuando semantic-release crea el tag
   release:
-    types: [published]
+    types: [published]    # cuando el GitHub Release se publica
 
 permissions:
   contents: read
   packages: write
 
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   ghcr:
-    if: startsWith(github.event.release.tag_name, 'v')
     runs-on: ubuntu-latest
+    env:
+      # nombre de imagen SIEMPRE en minúsculas
+      IMAGE: ghcr.io/${{ github.repository }}
+      TAG: ${{ github.ref_type == 'tag' && github.ref_name || github.event.release.tag_name }}
     steps:
       - uses: actions/checkout@v4
+
+      - name: Lowercase image name
+        run: echo "IMAGE=${IMAGE,,}" >> "$GITHUB_ENV"
+
+      - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
       - uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Set env
-        run: |
-          echo "TAG=${{ github.event.release.tag_name }}" >> "$GITHUB_ENV"
-          echo "IMAGE=ghcr.io/${GITHUB_REPOSITORY,,}"   >> "$GITHUB_ENV"
-      - name: Build & push (amd64+arm64)
-        run: |
-          docker buildx build \
-            --platform linux/amd64,linux/arm64 \
-            -t "$IMAGE:$TAG" -t "$IMAGE:latest" \
-            --push .
+
+      - uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64
+          push: true
+          provenance: false
+          tags: ${{ env.IMAGE }}:latest,${{ env.IMAGE }}:${{ env.TAG }}