Upload Helm chart as OCI artifact to GCHR

Signed-off-by: Jack Henschel <[email protected]>

.goreleaser.yaml

@@ -2,7 +2,16 @@ project_name: cert-manager-openshift-routes
 before:
   hooks:
     - go test -v ./...
+    # update static manifests
     - ./hack/generate-static-manifest.sh {{ .Version }}
+    # update Helm chart version
+    - sed -i 's/^version:.*$/version: {{ trimprefix .Version "v" }}/' deploy/chart/Chart.yaml
+    - sed -i 's/^appVersion:.*$/appVersion: {{ trimprefix .Version "v" }}/' deploy/chart/Chart.yaml
+    # package Helm
+    - helm package ./deploy/chart --version {{ trimprefix .Version "v"}} --app-version {{ .Version }}
+    # upload Helm chart as OCI artifact to GitHub Container Registry
+    - '{{if .IsSnapshot}}echo SKIPPING: {{end}}helm push ./openshift-routes-{{ trimprefix .Version "v"}}.tgz oci://ghcr.io/cert-manager/cert-manager-openshift-routes:{{ .Version }}-chart'
+
 builds:
   - id: cert-manager-openshift-routes
     main: ./internal/cmd
@@ -133,4 +142,5 @@ release:
   extra_files:
     - glob: ./cert-manager-openshift-routes-*.yaml
       name_template: cert-manager-openshift-routes.yaml
-
+    - glob: ./cert-manager-openshift-routes-*.tgz
+      name_template: cert-manager-openshift-routes-chart.tgz