fix: Remove race condition when testing target url

charts/json-server/templates/configmap.yaml

@@ -64,8 +64,8 @@ data:
       esac
     done
 
-    [ $(curl -kLs -w "%{http_code}" -o /dev/null https://$URL) != 200 ] && {
-      echo 'Could not connect to' $URL
+    [[ $(getent hosts $URL) ]] || {
+      echo 'Could not resolve' $URL
       exit 1
     }
 

charts/json-server/templates/deployment.yaml

@@ -60,18 +60,25 @@ spec:
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
           command:
-          - /bin/sh
+          - /bin/bash
           - -c
           - "/opt/update.sh -u {{ .Values.sidecar.targetUrl }}"
           volumeMounts:
           - name: {{ .Release.Name }}-configmap
             mountPath: /opt/update.sh
             subPath: update.sh
-            defaultMode: 0744
       volumes:
       - name: {{ .Release.Name }}-configmap
         configMap:
           name: {{ .Release.Name }}-configmap
+          items:
+          - key: db.json
+            path: db.json
+          - key: index.html
+            path: index.html
+          - key: update.sh
+            path: update.sh
+            mode: 0744
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}