Update Environment Variables

Environment-Variables.md

@@ -157,14 +157,30 @@ Example value: `pyrss`
 
 **Optional / No Default**
 
+Username for authenticating with your database
+
+Example value `pyrss`
+
 #### `DB_PASS`
 
 **Optional / No Default**
 
+Password for authenticating with your database, use a secure and unique value.
+
+Example value: **You should create one yourself**
+
 #### `DB_HOST`
 
 **Optional / No Default**
 
+The host endpoint for your database.
+
+Example value: `192.168.0.50` or use docker container names if applicable.
+
 #### `DB_PORT`
 
 **Optional / No Default**
+
+Port of the endpoint for the database.
+
+Example value: `5432`