diff --git a/helm/charts/README.md b/helm/charts/README.md
index 5cd16cb..a81d236 100644
--- a/helm/charts/README.md
+++ b/helm/charts/README.md
@@ -58,10 +58,6 @@ Kubernetes: `>= 1.23.0`
 | nameOverride | string | `""` | Override name |
 | nodered.enabled | bool | `true` | Enable/disable Node-RED. |
 | postgresql-ha.enabled | bool | `false` | Enable/disable Bitnami PostgreSQL HA database backend. |
-| postgresql-ha.postgresql.extraVolumes[0].emptyDir.medium | string | `"Memory"` |  |
-| postgresql-ha.postgresql.extraVolumes[0].emptyDir.sizeLimit | string | `"512Mi"` |  |
-| postgresql-ha.postgresql.extraVolumes[0].name | string | `"dshm"` |  |
-| postgresql-ha.postgresql.initdbScripts."01_installPostgis.sql" | string | `"CREATE EXTENSION if not exists postgis;\nCREATE EXTENSION if not exists postgis_raster;\n"` |  |
 
 ----------------------------------------------
 Autogenerated from chart metadata using [helm-docs v1.11.0](https://github.com/norwoodj/helm-docs/releases/v1.11.0)
diff --git a/helm/charts/values.yaml b/helm/charts/values.yaml
index b26e66f..905a7f4 100644
--- a/helm/charts/values.yaml
+++ b/helm/charts/values.yaml
@@ -77,6 +77,7 @@ postgresql-ha:
   # -- Enable/disable Bitnami PostgreSQL HA database backend.
   enabled: false
 
+  # @ignored
   postgresql:
     extraVolumes:
       - name: dshm
@@ -84,7 +85,16 @@ postgresql-ha:
           medium: Memory
           sizeLimit: 512Mi
 
+    # @ignored
     initdbScripts:
-      01_installPostgis.sql: |
-        CREATE EXTENSION if not exists postgis;
-        CREATE EXTENSION if not exists postgis_raster;
+      01_createExtensionPostGIS.sh: |
+        #!/bin/bash
+        set -e
+        echo "Initialize FROST-Server database..."
+        export PGPASSWORD=$POSTGRESQL_POSTGRES_PASSWORD
+        psql -v ON_ERROR_STOP=1 --dbname "$POSTGRESQL_DATABASE" <<-EOSQL
+          CREATE EXTENSION if not exists postgis;
+          CREATE EXTENSION if not exists postgis_raster;
+        EOSQL
+
+        echo "Initialize FROST-Server database...done!"