Publish Helm chart to ghcr.io/telepresenceio

Relates to #3649
Closes #3657

Signed-off-by: Thomas Hallgren <[email protected]>

.github/workflows/release.yaml

@@ -67,6 +67,8 @@ jobs:
           platforms: linux/amd64,linux/arm64
       - name: Build image dependencies
         run: make images-deps
+      - name: Make helm chart
+        run: make helm-chart
       - name: Log in to registry
         run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
       - name: Push client image
@@ -77,6 +79,8 @@ jobs:
         run: |
           docker buildx build --platform=linux/amd64,linux/arm64 --build-arg TELEPRESENCE_VERSION=${{env.TELEPRESENCE_SEMVER}} \
           --push --tag ${{env.TELEPRESENCE_REGISTRY}}/tel2:${{env.TELEPRESENCE_SEMVER}} -f build-aux/docker/images/Dockerfile.traffic .
+      - name: Push Helm Chart
+        run: helm push build-output/telepresence-chart.tgz oci://${{env.TELEPRESENCE_REGISTRY}}
       - name: Log out from registry
         if: always()
         run: docker logout

build-aux/main.mk

@@ -247,6 +247,13 @@ push-client-image: client-image ## (Build) Push the client container image to $(
 .PHONY: push-images
 push-images: push-tel2-image push-client-image
 
+.PHONY: helm-chart
+helm-chart: $(BUILDDIR)/telepresence-chart.tgz
+
+$(BUILDDIR)/telepresence-chart.tgz: $(wildcard charts/telepresence/**/*)
+	mkdir -p $(BUILDDIR)
+	go run packaging/helmpackage.go -o $@ -v $(TELEPRESENCE_SEMVER)
+
 .PHONY: clobber
 clobber: ## (Build) Remove all build artifacts and tools
 	rm -rf $(BUILDDIR)

packaging/helmpackage.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/blang/semver/v4"
+
+	telcharts "github.com/telepresenceio/telepresence/v2/charts"
+)
+
+type sv semver.Version
+
+func (v *sv) String() string {
+	return (*semver.Version)(v).String()
+}
+
+func (v *sv) Set(s string) error {
+	ver, err := semver.Parse(s)
+	if err == nil {
+		*v = sv(ver)
+	}
+	return err
+}
+
+func main() {
+	var output string
+	var version sv
+	flag.StringVar(&output, "o", "", "output file")
+	flag.Var(&version, "v", "Helm chart version")
+	flag.Parse()
+	err := packageHelmChart(output, semver.Version(version))
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func packageHelmChart(filename string, version semver.Version) error {
+	fh, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+	return telcharts.WriteChart(telcharts.DirTypeTelepresence, fh, "telepresence", version.String())
+}