Move insecure registry configuration from Docker login and build steps to Buildx setup in backend deployment workflow

.forgejo/workflows/deploy-backend.yaml

@@ -19,6 +19,11 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          config-inline: |
+            [registry."${{ vars.DOCKER_REGISTRY }}"]
+              http = true
+              insecure = true
 
       - name: Login to Docker Registry
         uses: docker/login-action@v3
@@ -26,7 +31,6 @@ jobs:
           registry: ${{ vars.DOCKER_REGISTRY }}
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-          insecure: true
 
       - name: Extract metadata
         id: meta
@@ -48,7 +52,6 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-          insecure: true
 
   deploy:
     name: Deploy Backend to Server
@@ -63,4 +66,4 @@ jobs:
           port: ${{ vars.SSH_DEPLOY_PORT }}
           username: ${{ secrets.SSH_DEPLOY_USER }}
           password: ${{ secrets.SSH_DEPLOY_PASSWORD }}
-          script: eval "${{ secrets.SSH_DEPLOY_BACKEND_CMD }}"
+          script: eval "${{ secrets.SSH_DEPLOY_BACKEND_CMD }}"