Partial backport of protobuf generation changes. (#7302)

This is a manual backport of the changes to how we build and run the protobuf
toolchain images in Docker. The main effect here is to point to the new image
from ghcr.io/tendermint/docker-proto-builder, but to make that work it is also
necessary to update some of the branch pointers.

This change does NOT include the changes from #7269 and #7291 to point to the
proto files in the spec repo. To do that, we will need to create a branch or
tag on the spec that has the released version, which does not exist in the spec
history as it currently stands.

Makefile

@@ -15,7 +15,9 @@ endif
 LD_FLAGS = -X github.com/tendermint/tendermint/version.TMVersion=$(VERSION)
 BUILD_FLAGS = -mod=readonly -ldflags "$(LD_FLAGS)"
 HTTPS_GIT := https://github.com/tendermint/tendermint.git
-DOCKER_BUF := docker run -v $(shell pwd):/workspace --workdir /workspace bufbuild/buf
+BUILD_IMAGE := ghcr.io/tendermint/docker-build-proto
+BASE_BRANCH := v0.35.x
+DOCKER_PROTO := docker run -v $(shell pwd):/workspace --workdir /workspace $(BUILD_IMAGE)
 CGO_ENABLED ?= 0
 
 # handle nostrip
@@ -83,26 +85,28 @@ proto-all: proto-gen proto-lint proto-check-breaking
 .PHONY: proto-all
 
 proto-gen:
-	@docker pull -q tendermintdev/docker-build-proto
-	@echo "Generating Protobuf files"
-	@docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto sh ./scripts/protocgen.sh
+	@echo "Generating Go packages for .proto files"
+	@$(DOCKER_PROTO) sh ./scripts/protocgen.sh
 .PHONY: proto-gen
 
 proto-lint:
-	@$(DOCKER_BUF) check lint --error-format=json
+	@echo "Running lint checks for .proto files"
+	@$(DOCKER_PROTO) buf lint --error-format=json
 .PHONY: proto-lint
 
 proto-format:
-	@echo "Formatting Protobuf files"
-	docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto find ./ -not -path "./third_party/*" -name *.proto -exec clang-format -i {} \;
+	@echo "Formatting .proto files"
+	@$(DOCKER_PROTO) find ./ -not -path "./third_party/*" -name '*.proto' -exec clang-format -i {} \;
 .PHONY: proto-format
 
 proto-check-breaking:
-	@$(DOCKER_BUF) check breaking --against-input .git#branch=master
+	@echo "Checking for breaking changes in .proto files"
+	@$(DOCKER_PROTO) buf breaking --against .git#branch=$(BASE_BRANCH)
 .PHONY: proto-check-breaking
 
 proto-check-breaking-ci:
-	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
+	@echo "Checking for breaking changes in .proto files"
+	@$(DOCKER_PROTO) buf breaking --against $(HTTPS_GIT)#branch=$(BASE_BRANCH)
 .PHONY: proto-check-breaking-ci
 
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