Added vars and trigger CI on YAML file modification

.gitea/workflows/image.yaml

@@ -6,6 +6,7 @@ on:
     branches: [master]
     paths:
       - "docker/Dockerfile"
+      - ".gitea/workflows/image.yaml"
 
 jobs:
   build:
@@ -25,8 +26,8 @@ jobs:
       - name: Login to Gitea Container Registry
         uses: docker/login-action@v3
         with:
-          registry: git.elyanpoujol.fr
-          username: ${{ secrets.CONTAINER_REGISTRY_USERNAME }}
+          registry: ${{ vars.CONTAINER_REGISTRY_URL }}
+          username: ${{ vars.CONTAINER_REGISTRY_USERNAME }}
           password: ${{ secrets.CONTAINER_REGISTRY_TOKEN }}
 
       - name: Get Current Date