chore: use Go 1.16 global install command

Plus add stringer tool.

Signed-off-by: Alexey Palazhchenko <alexey.palazhchenko@gmail.com>

Dockerfile

@@ -50,10 +50,11 @@ RUN ["/toolchain/bin/ln", "-svf", "/toolchain/bin/bash", "/bin/sh"]
 RUN ["/toolchain/bin/ln", "-svf", "/toolchain/etc/ssl", "/etc/ssl"]
 RUN curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b /toolchain/bin v1.38.0
 ARG GOFUMPT_VERSION
-RUN cd $(mktemp -d) \
-    && go mod init tmp \
-    && go get mvdan.cc/gofumpt/gofumports@${GOFUMPT_VERSION} \
+RUN go install mvdan.cc/gofumpt/gofumports@${GOFUMPT_VERSION} \
     && mv /go/bin/gofumports /toolchain/go/bin/gofumports
+ARG STRINGER_VERSION
+RUN go install golang.org/x/tools/cmd/stringer@${STRINGER_VERSION} \
+    && mv /go/bin/stringer /toolchain/go/bin/stringer
 RUN curl -sfL https://github.com/uber/prototool/releases/download/v1.10.0/prototool-Linux-x86_64.tar.gz | tar -xz --strip-components=2 -C /toolchain/bin prototool/bin/prototool
 COPY ./hack/docgen /go/src/github.com/talos-systems/docgen
 RUN cd /go/src/github.com/talos-systems/docgen \
@@ -119,7 +120,7 @@ RUN gofumports -w -local github.com/talos-systems/talos /api/
 FROM build-go AS go-generate
 COPY ./pkg/machinery /pkg/machinery
 WORKDIR /pkg/machinery
-RUN --mount=type=cache,target=/.cache go generate /pkg/machinery/config/types/v1alpha1/
+RUN --mount=type=cache,target=/.cache go generate /pkg/machinery/config/types/v1alpha1/...
 WORKDIR /
 
 FROM scratch AS generate
@@ -133,7 +134,7 @@ COPY --from=generate-build /api/cluster/*.pb.go /pkg/machinery/api/cluster/
 COPY --from=generate-build /api/storage/*.pb.go /pkg/machinery/api/storage/
 COPY --from=generate-build /api/resource/*.pb.go /pkg/machinery/api/resource/
 COPY --from=generate-build /api/inspect/*.pb.go /pkg/machinery/api/inspect/
-COPY --from=go-generate /pkg/machinery/config/types/v1alpha1/*_doc.go /pkg/machinery/config/types/v1alpha1/
+COPY --from=go-generate /pkg/machinery/config/types/v1alpha1/ /pkg/machinery/config/types/v1alpha1/
 
 # The base target provides a container that can be used to build all Talos
 # assets.

Makefile

@@ -14,7 +14,8 @@ TOOLS ?= ghcr.io/talos-systems/tools:v0.5.0-alpha.0-4-g1f26def
 PKGS ?= v0.5.0-alpha.0-7-g98964cb
 EXTRAS ?= v0.3.0-alpha.0-2-gcf3934a
 GO_VERSION ?= 1.16
-GOFUMPT_VERSION ?= abc0db2c416aca0f60ea33c23c76665f6e7ba0b6
+GOFUMPT_VERSION ?= v0.1.0
+STRINGER_VERSION ?= v0.1.0
 IMPORTVET ?= autonomy/importvet:f6b07d9
 OPERATING_SYSTEM := $(shell uname -s | tr "[:upper:]" "[:lower:]")
 TALOSCTL_DEFAULT_TARGET := talosctl-$(OPERATING_SYSTEM)
@@ -68,6 +69,7 @@ COMMON_ARGS += --build-arg=TOOLS=$(TOOLS)
 COMMON_ARGS += --build-arg=PKGS=$(PKGS)
 COMMON_ARGS += --build-arg=EXTRAS=$(EXTRAS)
 COMMON_ARGS += --build-arg=GOFUMPT_VERSION=$(GOFUMPT_VERSION)
+COMMON_ARGS += --build-arg=STRINGER_VERSION=$(STRINGER_VERSION)
 COMMON_ARGS += --build-arg=TAG=$(TAG)
 COMMON_ARGS += --build-arg=ARTIFACTS=$(ARTIFACTS)
 COMMON_ARGS += --build-arg=IMPORTVET=$(IMPORTVET)
@@ -240,7 +242,7 @@ cloud-images: ## Uploads cloud images (AMIs, etc.) to the cloud registry.
 
 .PHONY: fmt
 fmt: ## Formats the source code.
-	@docker run --rm -it -v $(PWD):/src -w /src golang:$(GO_VERSION) bash -c "export GO111MODULE=on; export GOPROXY=https://proxy.golang.org; cd /tmp && go mod init tmp && go get mvdan.cc/gofumpt/gofumports@$(GOFUMPT_VERSION) && cd - && gofumports -w -local github.com/talos-systems/talos ."
+	@docker run --rm -it -v $(PWD):/src -w /src golang:$(GO_VERSION) bash -c "go install mvdan.cc/gofumpt/gofumports@$(GOFUMPT_VERSION) && gofumports -w -local github.com/talos-systems/talos ."
 
 lint-%: ## Runs the specified linter. Valid options are go, protobuf, and markdown (e.g. lint-go).
 	@$(MAKE) target-lint-$* PLATFORM=linux/amd64