Merge pull request #991 from supertokens/feat/add-detail-about-postgres-connection-url-in-core-self-hosted

Author: bcbogdan

docs/deployment/self-host-supertokens.mdx

@@ -302,6 +302,10 @@ You also need to make the database listen on all the IPs of the local machine.
 Edit the `postgresql.conf` configuration file and set the value of `listen_addresses` to `0.0.0.0`.
 :::
 
+:::caution
+It is important to use the `postgresql://` scheme designator in the PostgreSQL Connection URI. Using `postgres://` will lead to a startup error.
+:::
+
 ```bash
 
 docker run \
@@ -358,6 +362,11 @@ mysql_database_name: "supertokens"
   </DatabaseTabs.TabItem>
 
   <DatabaseTabs.TabItem value="postgresql">
+
+:::caution
+It is important to use the `postgresql://` scheme designator in the PostgreSQL Connection URI. Using `postgres://` will lead to a startup error.
+:::
+
 ```yaml
 # You need to add the following to the config.yaml file.
 # The file path can be found by running the "supertokens --help" command