fix

docs/vault-psql-dynamic.md

@@ -12,7 +12,7 @@ vault secrets enable -path=psql database
 vault write psql/config/test-psql \
     plugin_name=postgresql-database-plugin \
     allowed_roles="db1-role" \
-    connection_url="postgresql://{{username}}:{{password}}@psql:5432/postgres?sslmode=disable" \
+    connection_url="postgresql://{{username}}:{{password}}@psql:5432/testdb1?sslmode=disable" \
     username="root" \
     password="pa$$w0rd"
 ```

psql/docker-compose.yaml

@@ -9,11 +9,16 @@ services:
       POSTGRES_USER: root
       POSTGRES_PASSWORD: pa$$w0rd
       PGDATA: /var/lib/postgresql/data
+    volumes:
+      - pgdata:/var/lib/postgresql/data
     expose:
       - 5432
     networks:
       - vault_net
 
+volumes:
+  pgdata:
+
 networks:
   vault_net:
     name: vault_net