Enhance GitHub Actions workflow to support versioned tags and improve Docker image tagging

.forgejo/workflows/build.yaml

@@ -2,6 +2,8 @@ name: Build Docker image
 
 on:
   push:
+    tags:
+      - 'v*'
 
 jobs:
   build:
@@ -22,4 +24,6 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           push: true
-          tags: code.edgarpierre.fr/${{ github.repository }}:${{ github.ref_name }}
+          tags:
+            - code.edgarpierre.fr/${{ github.repository }}:${{ github.ref_name }}
+            - code.edgarpierre.fr/${{ github.repository }}:latest