fix(ci): retry frontend buildx build on EOF failures

.gitea/workflows/build.yaml

@@ -39,8 +39,26 @@ jobs:
         run: |
           set -euo pipefail
           export DOCKER_HOST=unix:///var/run/docker.sock
-          docker buildx build --push \
-            -f Dockerfile \
-            -t "$REGISTRY_HOSTPORT/nxtgauge-frontend-solid:${{ gitea.sha }}" \
-            -t "$REGISTRY_HOSTPORT/nxtgauge-frontend-solid:high-performance-latest" \
-            .
+
+          build_and_push() {
+            docker buildx build --push \
+              -f Dockerfile \
+              -t "$REGISTRY_HOSTPORT/nxtgauge-frontend-solid:${{ gitea.sha }}" \
+              -t "$REGISTRY_HOSTPORT/nxtgauge-frontend-solid:high-performance-latest" \
+              .
+          }
+
+          for attempt in 1 2 3; do
+            echo "Build attempt $attempt"
+            if build_and_push; then
+              exit 0
+            fi
+            echo "Build attempt $attempt failed; recreating builder and retrying"
+            docker buildx rm --all-inactive --force || true
+            docker buildx create --use || true
+            docker buildx inspect --bootstrap
+            sleep $((attempt * 10))
+          done
+
+          echo "Build failed after retries"
+          exit 1