feat(joplin-server): add probes on ping endpoint (#1675)

* feat(joplin-server): add probes on `ping` endpoint

* bump patch

* make APP_BASE_URL required

charts/stable/joplin-server/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "2.5.1"
 description: This server allows you to sync any Joplin client
 name: joplin-server
-version: 5.0.19
+version: 5.0.20
 kubeVersion: '>=1.16.0-0'
 keywords:
   - joplin

charts/stable/joplin-server/questions.yaml

@@ -86,6 +86,7 @@ questions:
           description: "Sets the APP_BASE_URL env var"
           schema:
             type: string
+            required: true
             default: ""
 
 # Include{containerConfig}

charts/stable/joplin-server/values.yaml

@@ -1,9 +1,6 @@
 image:
-  # -- image repository
   repository: tccr.io/truecharts/joplin-server
-  # -- image tag
   tag: v2.5.1@sha256:a285ff0cf05f534efd28c6652925b57a9774ba41923d15536b873fbbdbabcd2b
-  # -- image pull policy
   pullPolicy: IfNotPresent
 
 securityContext:
@@ -14,14 +11,9 @@ podSecurityContext:
   runAsUser: 0
   runAsGroup: 0
 
-# -- environment variables. See [image docs](https://github.com/laurent22/joplin) for more details.
-# @default -- See below
 env:
-  # -- Set the container timezone
   TZ: UTC
-  # -- joplin-server base URL
+  APP_BASE_URL: http://localhost:22300
-  APP_BASE_URL: https://joplin.domain
-  # -- joplin-server listening port (same as Service port)
   APP_PORT: 22300
   DB_CLIENT: "pg"
   POSTGRES_DATABASE: "{{ .Values.postgresql.postgresqlDatabase }}"
@@ -38,8 +30,14 @@ envValueFrom:
       name: dbcreds
       key: plainhost
 
-# -- Configures service settings for the chart.
+probes:
-# @default -- See values.yaml
+  liveness:
+    path: "/api/ping"
+  readiness:
+    path: "/api/ping"
+  startup:
+    path: "/api/ping"
+
 service:
   main:
     ports:
@@ -51,8 +49,7 @@ persistence:
   config:
     enabled: true
     mountPath: "/config"
-# -- Enable and configure postgresql database subchart under this key.
+
-# @default -- See values.yaml
 postgresql:
   enabled: true
   existingSecret: "dbcreds"