build: nightly builds at 2:48am (#3490)

.github/workflows/nightly-build.yml

@@ -0,0 +1,24 @@
+name: nightly-build
+on:
+  schedule:
+    # Daily at 2:48am
+    - cron: '48 2 * * *'
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@main
+        with:
+          go-version: 1.19.4
+        id: go
+      - name: Code checkout
+        uses: actions/checkout@master
+      - name: Publish
+        run: |
+          LATEST_TAG=nightly PKG_TAG=nightly make publish

Makefile

@@ -3,6 +3,7 @@ PKG_PREFIX := github.com/VictoriaMetrics/VictoriaMetrics
 DATEINFO_TAG ?= $(shell date -u +'%Y%m%d-%H%M%S')
 BUILDINFO_TAG ?= $(shell echo $$(git describe --long --all | tr '/' '-')$$( \
 	      git diff-index --quiet HEAD -- || echo '-dirty-'$$(git diff-index -u HEAD | openssl sha1 | cut -d' ' -f2 | cut -c 1-8)))
+LATEST_TAG ?= latest
 
 PKG_TAG ?= $(shell git tag -l --points-at HEAD)
 ifeq ($(PKG_TAG),)

deployment/docker/Makefile

@@ -77,7 +77,7 @@ publish-via-docker: \
 		--build-arg root_image=$(ROOT_IMAGE) \
 		--build-arg APP_NAME=$(APP_NAME) \
 		--tag $(DOCKER_NAMESPACE)/$(APP_NAME):$(PKG_TAG)$(RACE) \
-		--tag $(DOCKER_NAMESPACE)/$(APP_NAME):latest$(RACE) \
+		--tag $(DOCKER_NAMESPACE)/$(APP_NAME):$(LATEST_TAG)$(RACE) \
 		-o type=image \
 		-f app/$(APP_NAME)/multiarch/Dockerfile \
 		--push \