use a 'latest' tag for releases

.github/actions/build-image/action.yaml

@@ -5,6 +5,9 @@ inputs:
   image_tag:
     description: The image tag
     required: true
+  tag_latest:
+    description: Tag latest as well as the provided tag
+    default: "false"
   token:
     description: Github token
     required: true
@@ -40,6 +43,7 @@ runs:
       run: >-       
         ./earthly 
         --push 
-        +build 
+        +docker-multiarch
+        ${{ inputs.tag_latest != 'false' && format('--LATEST_IMAGE_NAME=ghcr.io/{0}:latest', github.repository) || '' }} 
         --GIT_TAG=${{ inputs.image_tag }}
         --IMAGE_NAME=ghcr.io/${{ github.repository }}:${{ inputs.image_tag }}

.github/workflows/on_release_published.yaml

@@ -19,4 +19,5 @@ jobs:
       - uses: ./.github/actions/build-image
         with:
           image_tag: ${{ github.ref_name }}
+          tag_latest: true
           token: ${{ secrets.GITHUB_TOKEN }}

.tool-versions

@@ -1,4 +1,4 @@
-earthly 0.7.23
+earthly 0.8.6
 golang 1.21.6
 golangci-lint 1.56.1
 helm 3.12.2

Earthfile

@@ -17,7 +17,7 @@ ci-helm:
     BUILD +test-helm
     BUILD +release-helm
 
-build:
+docker-multiarch:
     BUILD --platform=linux/amd64 --platform=linux/arm64 +docker
 
 release:
@@ -129,7 +129,8 @@ docker:
 
     CMD ["./kubechecks", "controller"]
     ARG --required IMAGE_NAME
-    SAVE IMAGE --push $IMAGE_NAME
+    ARG LATEST_IMAGE_NAME=""
+    SAVE IMAGE --push $IMAGE_NAME $LATEST_IMAGE_NAME
 
 dlv:
     ARG --required GOLANG_VERSION

charts/kubechecks/Chart.yaml

@@ -1,8 +1,7 @@
 apiVersion: v2
 name: kubechecks
 description: A Helm chart for kubechecks
-version: 0.4.3
-appVersion: "1.3.3"
+version: 0.4.4
 type: application
 maintainers:
   - name: zapier

charts/kubechecks/templates/_helpers.tpl

@@ -36,12 +36,10 @@ Common labels
 {{- define "kubechecks.labels" -}}
 helm.sh/chart: {{ include "kubechecks.chart" . }}
 {{ include "kubechecks.selectorLabels" . }}
-{{- if .Chart.AppVersion }}
-app.kubernetes.io/version: {{ coalesce .Values.deployment.image.tag .Chart.AppVersion | quote }}
-{{- end }}
+app.kubernetes.io/version: {{ .Values.deployment.image.tag }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
-{{- if .Values.commonLabels }}
-{{ toYaml .Values.commonLabels }}
+{{- with .Values.commonLabels }}
+{{ . | toYaml }}
 {{- end }}
 {{- end }}
 

charts/kubechecks/templates/deployment.yaml

@@ -5,8 +5,7 @@ metadata:
   {{- with .Values.deployment.annotations }}
   annotations: {{ toYaml . | nindent 4 }}
   {{- end}}
-  labels:
-    {{- include "kubechecks.labels" . | nindent 4 }}
+  labels: {{- include "kubechecks.labels" . | nindent 4 }}
 spec:
   replicas: {{ .Values.deployment.replicaCount }}
   selector:
@@ -36,7 +35,7 @@ spec:
       containers:
         - name: {{ .Chart.Name }}
           {{- with .Values.deployment.image }}
-          image: "{{ .name }}:{{ coalesce .tag (printf "v%s" $.Chart.AppVersion) }}"
+          image: "{{ .name }}:{{ required "must set .deployment.image.tag" .tag }}"
           imagePullPolicy: {{ .pullPolicy }}
           {{- end }}
           {{- with .Values.deployment.args }}

charts/kubechecks/tests/configmap_test.yaml

@@ -7,16 +7,19 @@ values: [basics.min-values.yaml]
 tests:
   - it: should render
     chart:
-      appVersion: 1.0.0
       version: 0.1.0
+    set:
+      deployment:
+        image:
+          tag: 1.0.0
     release:
       name: kubechecks
     asserts:
       - isKind:
           of: ConfigMap
       - equal:
           path: data
-          value: 
+          value:
             KUBECHECKS_ARGOCD_API_INSECURE: "false"
             KUBECHECKS_TEST_VALUE: Hello
       - equal:

charts/kubechecks/tests/deployment_test.yaml

@@ -5,9 +5,21 @@ templates: [deployment.yaml]
 values: [basics.min-values.yaml]
 
 tests:
+  - it: defaults to latest image tag
+    asserts:
+      - equal:
+          path: metadata.labels["app.kubernetes.io/version"]
+          value: latest
+      - equal:
+          path: spec.template.spec.containers[0].image
+          value: ghcr.io/zapier/kubechecks:latest
+
   - it: should render
+    set:
+      deployment:
+        image:
+          tag: v1.0.0
     chart:
-      appVersion: 1.0.0
       version: 0.1.0
     release:
       name: kubechecks
@@ -16,15 +28,16 @@ tests:
           of: Deployment
       - equal:
           path: spec.template.spec.containers[0].image
-          value: ghcr.io/zapier/kubechecks:v1.0.0 # App Version, not chart versions
+          value: ghcr.io/zapier/kubechecks:v1.0.0
       - equal:
           path: metadata.labels
           value:
             app.kubernetes.io/instance: kubechecks
             app.kubernetes.io/managed-by: Helm
             app.kubernetes.io/name: kubechecks
-            app.kubernetes.io/version: 1.0.0
+            app.kubernetes.io/version: v1.0.0
             helm.sh/chart: kubechecks-0.1.0
+
   - it: should allow arbitrary annotations
     set:
       deployment:

charts/kubechecks/values.yaml

@@ -40,7 +40,7 @@ deployment:
   image:
     pullPolicy: Always
     name: "ghcr.io/zapier/kubechecks"
-    tag: ""  # Defaults to the .Chart.AppVersion
+    tag: "latest"
 
   imagePullSecrets: []