Make grpc gateway v2.21.0

plugins/grpc-ecosystem/gateway/v2.21.0/.dockerignore

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+*
+!Dockerfile
+!separate_pkg_additional_imports.patch

plugins/grpc-ecosystem/gateway/v2.21.0/Dockerfile

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+# syntax=docker/dockerfile:1.7
+FROM --platform=$BUILDPLATFORM golang:1.22.5-bookworm AS build
+
+ARG TARGETOS TARGETARCH
+ENV CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH
+
+WORKDIR /tmp
+RUN git clone --depth 1 --branch v2.21.0 https://github.com/grpc-ecosystem/grpc-gateway.git
+COPY --link separate_pkg_additional_imports.patch /tmp/separate_pkg_additional_imports.patch
+WORKDIR /tmp/grpc-gateway
+RUN git apply /tmp/separate_pkg_additional_imports.patch
+WORKDIR /tmp/grpc-gateway/protoc-gen-grpc-gateway
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go install -ldflags="-s -w" -trimpath \
+    && mv /go/bin/${GOOS}_${GOARCH}/protoc-gen-grpc-gateway /go/bin/protoc-gen-grpc-gateway || true
+
+FROM scratch
+COPY --from=build --link --chown=root:root /etc/passwd /etc/passwd
+COPY --from=build --link --chown=root:root /go/bin/protoc-gen-grpc-gateway /
+USER nobody
+ENTRYPOINT [ "/protoc-gen-grpc-gateway" ]

plugins/grpc-ecosystem/gateway/v2.21.0/buf.plugin.yaml

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+version: v1
+name: buf.build/grpc-ecosystem/gateway
+plugin_version: v2.21.0
+source_url: https://github.com/grpc-ecosystem/grpc-gateway
+integration_guide_url: https://github.com/grpc-ecosystem/grpc-gateway#usage
+description: gRPC to JSON proxy generator following the gRPC HTTP spec.
+output_languages:
+  - go
+registry:
+  go:
+    min_version: "1.20"
+    deps:
+      - module: github.com/grpc-ecosystem/grpc-gateway/v2
+        version: v2.21.0
+  opts:
+    - paths=source_relative
+    - standalone=true
+    - separate_package=true
+deps:
+  - plugin: buf.build/protocolbuffers/go:v1.34.1
+  - plugin: buf.build/grpc/go:v1.3.0
+spdx_license_id: BSD-3-Clause
+license_url: https://github.com/grpc-ecosystem/grpc-gateway/blob/v2.21.0/LICENSE.txt