attempt to build release artifacts in CI (using updated Go version)

most of this is stolen from the 3.x branch

for building the release artifacts I removed the restriction of only
master branch, so we should be able to see if it works before the PR
is merged.

.circleci/config.yml

@@ -132,12 +132,23 @@ jobs:
       - checkout-plus
       - attach_workspace:
           at: .
-      - run: make release
+      - setup_remote_docker:
+          version: 19.03.13 # see https://support.circleci.com/hc/en-us/articles/360050934711
+      - run: echo -n $DOCKER_PASS | docker login -u $DOCKER_USER --password-stdin
+      - run: make docker-release
       - store_artifacts:
           path: build
       - persist_to_workspace:
           root: .
           paths: build
+  publish_release:
+    executor:
+      name: golang
+    steps:
+      - attach_workspace:
+          at: .
+      - run: go get github.com/tcnksm/ghr
+      - run: ghr -t ${GITHUB_PERSONAL_ACCESS_TOKEN} -u ${CIRCLE_PROJECT_USERNAME} -r ${CIRCLE_PROJECT_REPONAME} -c ${CIRCLE_SHA1} -delete ${CIRCLE_TAG} ./build/
   prerelease-upload:
     docker:
       - image: circleci/python:2.7-jessie
@@ -237,6 +248,22 @@ workflows:
             - linter
             - check-license-headers
             - test-golang-1.15.5
+      - release:
+          context: molecula
+          requires:
+            - setup
+          filters:
+            tags:
+              only: /^v.*/
+      - publish_release:
+          context: molecula
+          requires:
+            - release
+          filters:
+            tags:
+              only: /^v.*/
+            branches:
+              ignore: /.*/
       - dockerhub-upload-unstable:
           context: molecula
           requires:

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.14.10 as builder
+FROM golang:latest as builder
 
 ARG BUILD_FLAGS
 ARG MAKE_FLAGS

Makefile

@@ -12,7 +12,7 @@ BUILD_TIME := $(shell date -u +%FT%T%z)
 SHARD_WIDTH = 20
 COMMIT := $(shell git describe --exact-match >/dev/null 2>&1 || git rev-parse --short HEAD)
 LDFLAGS="-X github.com/pilosa/pilosa/v2.Version=$(VERSION) -X github.com/pilosa/pilosa/v2.BuildTime=$(BUILD_TIME) -X github.com/pilosa/pilosa/v2.Variant=$(VARIANT) -X github.com/pilosa/pilosa/v2.Commit=$(COMMIT) -X github.com/pilosa/pilosa/v2.LatticeCommit=$(LATTICE_COMMIT)"
-GO_VERSION=1.14.10
+GO_VERSION=1.16.7
 RELEASE ?= 0
 RELEASE_ENABLED = $(subst 0,,$(RELEASE))
 BUILD_TAGS += $(if $(RELEASE_ENABLED),release)
@@ -205,6 +205,11 @@ docker-tag-push: vendor
 	docker push $(DOCKER_TARGET)
 	@echo Pushed docker image: $(DOCKER_TARGET)
 
+docker-release: check-clean generate-statik
+	$(MAKE) docker-build GOOS=linux GOARCH=amd64
+	$(MAKE) docker-build GOOS=darwin GOARCH=amd64
+	$(MAKE) docker-build GOOS=darwin GOARCH=arm64
+
 # Compile Pilosa inside Docker container
 docker-build: vendor
 	docker run --rm -v $(PWD):/go/src/$(CLONE_URL) -w /go/src/$(CLONE_URL) -e GOOS=$(GOOS) -e GOARCH=$(GOARCH) golang:$(GO_VERSION) make build FLAGS="$(FLAGS) -mod=vendor" RELEASE=$(RELEASE)