build: parametrized pipeline (no more approval for release build), embed exact go version info in artifacts

refs #378
refs #377

.circleci/config.yml

@@ -127,10 +127,25 @@ commands:
               -d '{"context":"'"$CONTEXT"'", "state": "success", "description":"'"$DESCRIPTION"'", "target_url":"'"$TARGETURL"'"}'
 
 
+parameters:
+
+  do_ci:
+    type: boolean
+    default: true
+
+  do_release:
+    type: boolean
+    default: false
+
+  release_docker_baseimage_tag:
+    type: string
+    default: "latest"
 
 workflows:
   version: 2
-  build:
+
+  ci:
+    when: << pipeline.parameters.do_ci >>
     jobs:
       - quickcheck-docs
       - quickcheck-go: &quickcheck-go-smoketest
@@ -159,18 +174,10 @@ workflows:
                 goos: freebsd
                 goarch: arm64
 
-      - request-release-build:
-          type: approval
-          requires:
-            - quickcheck-docs
-            - quickcheck-go-amd64-linux-1.15 #quickcheck-go-smoketest.name
-            - quickcheck-go-matrix
-            - test-go-on-latest-go-release
-
-      - release-build:
-          requires:
-            - request-release-build
-
+  release:
+    when: << pipeline.parameters.do_release >>
+    jobs:
+      - release-build
       - release-deb:
           requires:
             - release-build
@@ -249,7 +256,7 @@ jobs:
     machine: true
     steps:
       - checkout
-      - run: make release-docker
+      - run: make release-docker RELEASE_DOCKER_BASEIMAGE_TAG=<<pipeline.parameters.release_docker_baseimage_tag>>
       - persist_to_workspace:
           root: .
           paths: [.]

Makefile

@@ -28,6 +28,8 @@ GO_BUILDFLAGS := $(GO_MOD_READONLY) $(GO_EXTRA_BUILDFLAGS)
 GO_BUILD := $(GO_ENV_VARS) $(GO) build $(GO_BUILDFLAGS) -ldflags $(GO_LDFLAGS)
 GOLANGCI_LINT := golangci-lint
 GOCOVMERGE := gocovmerge
+RELEASE_DOCKER_BASEIMAGE_TAG ?= 1.15
+RELEASE_DOCKER_BASEIMAGE ?= golang:$(RELEASE_DOCKER_BASEIMAGE_TAG)
 
 ifneq ($(GOARM),)
 	ZREPL_TARGET_TUPLE := $(GOOS)-$(GOARCH)v$(GOARM)
@@ -57,8 +59,9 @@ ifeq (SIGN, 1)
 endif
 	@echo "ZREPL RELEASE ARTIFACTS AVAILABLE IN artifacts/release"
 
-release-docker:
-	docker build -t zrepl_release --pull -f build.Dockerfile .
+release-docker: $(ARTIFACTDIR)
+	sed 's/FROM.*!SUBSTITUTED_BY_MAKEFILE/FROM $(RELEASE_DOCKER_BASEIMAGE)/' build.Dockerfile > artifacts/release-docker.Dockerfile
+	docker build -t zrepl_release --pull -f artifacts/release-docker.Dockerfile .
 	docker run --rm -i -v $(CURDIR):/src -u $$(id -u):$$(id -g) \
 		zrepl_release \
 		make release GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM)
@@ -319,6 +322,7 @@ $(ARTIFACTDIR)/_zrepl.zsh_completion:
 
 $(ARTIFACTDIR)/go_env.txt:
 	$(GO_ENV_VARS) $(GO) env > $@
+	$(GO) version >> $@
 
 docs: $(ARTIFACTDIR)/docs
 	# https://www.sphinx-doc.org/en/master/man/sphinx-build.html

build.Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:latest
+FROM !SUBSTITUTED_BY_MAKEFILE
 
 RUN apt-get update && apt-get install -y \
     python3-pip \

version/version.go

@@ -13,6 +13,7 @@ var (
 
 type ZreplVersionInformation struct {
 	Version         string
+	RuntimeGo       string
 	RuntimeGOOS     string
 	RuntimeGOARCH   string
 	RUNTIMECompiler string
@@ -21,6 +22,7 @@ type ZreplVersionInformation struct {
 func NewZreplVersionInformation() *ZreplVersionInformation {
 	return &ZreplVersionInformation{
 		Version:         zreplVersion,
+		RuntimeGo:       runtime.Version(),
 		RuntimeGOOS:     runtime.GOOS,
 		RuntimeGOARCH:   runtime.GOARCH,
 		RUNTIMECompiler: runtime.Compiler,
@@ -28,8 +30,8 @@ func NewZreplVersionInformation() *ZreplVersionInformation {
 }
 
 func (i *ZreplVersionInformation) String() string {
-	return fmt.Sprintf("zrepl version=%s GOOS=%s GOARCH=%s Compiler=%s",
-		i.Version, i.RuntimeGOOS, i.RuntimeGOARCH, i.RUNTIMECompiler)
+	return fmt.Sprintf("zrepl version=%s go=%s GOOS=%s GOARCH=%s Compiler=%s",
+		i.Version, i.RuntimeGo, i.RuntimeGOOS, i.RuntimeGOARCH, i.RUNTIMECompiler)
 }
 
 var prometheusMetric = prometheus.NewUntypedFunc(