feat(helm): Uplift to Helm v3, various requests, tag latest image (#249)

* feat(container): Push latest tag during release

* feat(helm): Upgrade from Helm v2 to Helm v3 spec

* feat(helm): Update Container Registry to GitHub

New images are only pushed to GHCR.

* feat(helm): Enable use of emptyDir volumes for testing

When the PVC is enabled, a PV will be created and mounted to the pod
instead of the emptyDir.

* feat(helm): Enable use of imagePullSecrets

For pulling images from a private registry.

.github/workflows/publish.yml

@@ -26,6 +26,7 @@ jobs:
           images: ghcr.io/${{ github.repository }}
           # generate Docker tags based on the following events/attributes
           tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
             type=ref,event=branch
             type=ref,event=pr
             type=semver,pattern={{version}}

helm/sloop/Chart.yaml

@@ -1,6 +1,6 @@
-apiVersion: v1
+apiVersion: v2
 appVersion: "1.0"
 description: Sloop is a kubernetes history visualization tool.
 name: sloop
-version: 0.1.0
+version: 0.2.0
 icon: https://raw.githubusercontent.com/salesforce/sloop/master/other/sloop_logo_color.png

helm/sloop/templates/statefulset.yaml

@@ -66,6 +66,10 @@ spec:
           name: sloop-data
         - mountPath: /sloopconfig/
           name: sloopconfig
+      {{- with .Values.image.pullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       volumes:
       - emptyDir:
           sizeLimit: {{ .Values.persistentVolume.sizeLimit }}
@@ -74,6 +78,7 @@ spec:
           name: {{ .Values.name }}
         name: sloopconfig
       serviceAccountName: {{ .Values.serviceAccountName }}
+{{- if .Values.persistentVolume.enabled }}
   volumeClaimTemplates:
   - metadata:
      name: sloop-data
@@ -86,3 +91,4 @@ spec:
      resources:
        requests:
          storage: {{ .Values.persistentVolume.size }}
+{{- end }}

helm/sloop/values.yaml

@@ -8,9 +8,13 @@ name: sloop
 replicas: 1
 image:
   tag: latest
-  repository: sloopimage/sloop
+  repository: ghcr.io/salesforce/sloop
   pullPolicy: IfNotPresent
+  # pullSecrets:
+  # - name: example-secret
 persistentVolume:
+  # If false then an emptyDir will be used.
+  enabled: true
   ## If defined it will specify the storageClass for the statefulSet
   ## If undefined it will use the cluster default (typically gp2 on AWS, standard on GKE)
   #  storageClass: