ci: retry registry pushes

Retry Docker image pushes to the Gitea registry so transient EOF failures during blob upload do not fail the whole CD run on the first attempt.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.gitea/workflows/package.yml

@@ -77,6 +77,26 @@ jobs:
 
       - name: Build and Push Image
         run: |
+          push_with_retry() {
+            image_ref="$1"
+            attempt=1
+            max_attempts=3
+
+            while [ "$attempt" -le "$max_attempts" ]; do
+              if docker push "$image_ref"; then
+                return 0
+              fi
+
+              if [ "$attempt" -eq "$max_attempts" ]; then
+                return 1
+              fi
+
+              echo "Push failed for $image_ref (attempt $attempt/$max_attempts); retrying in 10s..."
+              attempt=$((attempt + 1))
+              sleep 10
+            done
+          }
+
           docker build \
             -f ./Dockerfile \
             -t "${IMAGE_NAME}:${IMAGE_TAG}" \
@@ -91,8 +111,8 @@ jobs:
             --build-arg NEXT_PUBLIC_MAPBOX_TOKEN="${{ secrets.NEXT_PUBLIC_MAPBOX_TOKEN }}" \
             --build-arg NEXT_PUBLIC_TIANDITU_TOKEN="${{ secrets.NEXT_PUBLIC_TIANDITU_TOKEN }}" \
             .
-          docker push "${IMAGE_NAME}:${IMAGE_TAG}"
-          docker push "${IMAGE_NAME}:latest"
+          push_with_retry "${IMAGE_NAME}:${IMAGE_TAG}"
+          push_with_retry "${IMAGE_NAME}:latest"
 
       - name: Notify Deploy Server
         run: |