feat(helm): Add support for initContainers. (#104)

This could be useful when the auth server is deployed with
stac-auth-proxy and we need to wait.
At least in eoAPI would be good for testing
(developmentseed/eoapi-k8s#358).

---------

Co-authored-by: Anthony Lukach <[email protected]>

Author: pantierra

helm/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: stac-auth-proxy
 description: A Helm chart for stac-auth-proxy
 type: application
-version: 0.1.0
-appVersion: "1.0.0" 
+version: 0.1.1
+appVersion: "1.0.0"

helm/templates/deployment.yaml

@@ -17,6 +17,10 @@ spec:
       serviceAccountName: {{ include "stac-auth-proxy.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.securityContext | nindent 8 }}
+      {{- with .Values.initContainers }}
+      initContainers:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           securityContext:

helm/values.schema.yaml

@@ -229,6 +229,13 @@ properties:
     additionalProperties: true
     description: "Pod affinity rules"
 
+  initContainers:
+    type: array
+    items:
+      type: object
+      additionalProperties: true
+    description: "Init containers to run before the main container starts"
+
   serviceAccount:
     type: object
     properties:

helm/values.yaml

@@ -46,6 +46,14 @@ nodeSelector: {}
 tolerations: []
 affinity: {}
 
+# Init containers to run before the main container starts
+# initContainers: []
+# Example:
+# initContainers:
+#   - name: wait-for-oidc
+#     image: busybox:1.35
+#     command: ['sh', '-c', 'until nc -z oidc-server 8080; do sleep 2; done']
+
 # Environment variables for the application
 env:
   # Required configuration