Refactor CI workflow to use dynamic registry host and image name for Docker publishing

.gitea/workflows/ci.yaml

@@ -28,19 +28,25 @@ jobs:
 
       - name: Run Tests with Coverage
         run: poetry run pytest --cov --cov-report=term-missing --cov-fail-under=80
-
+  
   publish-container:
     needs: test-and-lint
     if: startsWith(github.ref, 'refs/tags/v')
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      
+      - name: Prepare Docker Metadata
+        id: meta
+        run: |
+          echo "REGISTRY_HOST=${GITEA_SERVER_URL#*://}" >> $GITHUB_OUTPUT
+          echo "IMAGE_NAME=$(echo ${{ gitea.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT
+        env:
+          GITEA_SERVER_URL: ${{ gitea.server_url }}
+
       - name: Login to Gitea Container Registry
         uses: docker/login-action@v2
         with:
-          registry: ${{ gitea.server_url }} 
-          # Nota: Quita 'https://' si server_url lo incluye y falla, suele ser solo dominio:puerto
+          registry: ${{ steps.meta.outputs.REGISTRY_HOST }}
           username: ${{ gitea.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
@@ -50,5 +56,5 @@ jobs:
           context: .
           push: true
           tags: |
-            ${{ gitea.server_url }}/${{ gitea.repository }}:latest
-            ${{ gitea.server_url }}/${{ gitea.repository }}:${{ gitea.ref_name }}
+            ${{ steps.meta.outputs.REGISTRY_HOST }}/${{ steps.meta.outputs.IMAGE_NAME }}:latest
+            ${{ steps.meta.outputs.REGISTRY_HOST }}/${{ steps.meta.outputs.IMAGE_NAME }}:${{ gitea.ref_name }}