use subpath for postgres

apps/gitea/templates/deployment.yaml

@@ -24,17 +24,6 @@ spec:
           volumeMounts:
             - name: etcletsencrypt
               mountPath: "/etc/letsencrypt"
-        # This does not work: the running postgres will block this
-        # init container to work (mount) the volume again
-        # - name: remove-lost-found
-        #   image: busybox
-        #   command:
-        #     - sh
-        #     - -c
-        #     - test -d /data/lost+found && rmdir /data/lost+found || exit 0
-        #   volumeMounts:
-        #     - name: postgres-data
-        #       mountPath: "/data"
       containers:
         # This container will only start *after* the cert has been placed
         - name: nginx
@@ -53,9 +42,11 @@ spec:
           envFrom:
           - configMapRef:
               name: {{ tpl .Values.identifier . }}-postgres-config
+          # Use subpath to avoid lost+found error
           volumeMounts:
             - name: postgres-data
               mountPath: "/var/lib/postgresql/data"
+              subPath: postgres
         - name: gitea
           image: gitea/gitea:1.14
           ports: