split nextcloud chart components into separate files

helm/nextcloud/templates/postgres-init-secret.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .Release.Name }}-postgres-init
+  annotations:
+    {{- include "helm_keep_annotation" . | nindent 4 }}
+stringData:
+  init-user-db.sh: |
+    #!/bin/bash
+    set -e
+
+    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+      CREATE USER nextcloud PASSWORD '{{ include "POSTGRES_PASSWORD" . | b64dec }}';
+      GRANT ALL PRIVILEGES ON DATABASE nextcloud TO nextcloud;
+      GRANT USAGE, CREATE ON SCHEMA public TO nextcloud;
+    EOSQL