ci: build and push release version images also with latest

Signed-off-by: Nico Braun <[email protected]>

Makefile

@@ -98,14 +98,15 @@ artifacts: bin/kustomize build ## Create all release artifacts and put the in .d
 ###@ Publish
 
 .PHONY: version-next
-version-next: # internal command to set VERSION to the next semver
+version-next: # internal command to set VERSION to the next semver and IS_LATEST accordingly
+	$(if $(filter $(PRE_RELEASE), 0), $(eval IS_LATEST = 1))
 	$(eval VERSION = $(shell docker run --rm -u "$$(id -u):$$(id -g)" \
 		-v $(CURDIR):/tmp -w /tmp convco/convco version --bump \
 		$(if $(filter $(PRE_RELEASE), 1),--prerelease rc)))
 
 .PHONY: image-publish
 image-publish: ## Build and push the images to CONTAINER_REGISTRY
-	$(MAKE) image-build BUILDX_FLAGS='--set *.attest=type=sbom --set=*.output=type=registry'
+	IS_LATEST=$(IS_LATEST) $(MAKE) image-build BUILDX_FLAGS='--set *.attest=type=sbom --set=*.output=type=registry'
 
 .PHONY: github-pages
 github-pages: bin/mdbook ## Build and publish the docs to github pages

build/docker-bake.hcl

@@ -1,23 +1,27 @@
 variable "CONTAINER_REGISTRY" { default = "docker.io" }
 variable "VERSION" { default = "dev" }
+variable "IS_LATEST" { default = "0" }
 
 group "default" { targets = ["gitgo", "gitexec"] }
 
 target "gitgo" {
   labels = {
     "org.opencontainers.image.author"  = "Nico Braun"
     "org.opencontainers.image.source"  = "https://github.com/bluebrown/kobold"
-    "org.opencontainers.image.created" = timestamp()
   }
   dockerfile = "build/Dockerfile"
   args       = { CGO_ENABLED = "1", BUILD_TAG = "gitgo", VERSION = VERSION}
-  tags       = ["${CONTAINER_REGISTRY}/bluebrown/kobold:${VERSION}"]
-  # attest = ["type=provenance,mode=min", "type=sbom"]
+  tags       = compact([
+    "${CONTAINER_REGISTRY}/bluebrown/kobold:${VERSION}",
+    equal(IS_LATEST, "1") ? "${CONTAINER_REGISTRY}/bluebrown/kobold:latest" : null
+  ])
 }
 
 target "gitexec" {
   inherits = ["gitgo"]
   args     = { BASE_IMAGE = "docker.io/alpine/git:v2.36.3", CGO_ENABLED = "0", BUILD_TAG = "gitexec", VERSION = VERSION}
-  tags     = ["${CONTAINER_REGISTRY}/bluebrown/kobold:${VERSION}-gitexec"]
-  # output   = ["type=tar,dest=.dist/container-image-kobold-gitexec.tar"]
+  tags     = compact([
+    "${CONTAINER_REGISTRY}/bluebrown/kobold:${VERSION}-gitexec",
+    equal(IS_LATEST, "1") ? "${CONTAINER_REGISTRY}/bluebrown/kobold:latest-gitexec" : null
+  ])
 }