I was confused with the brackets, so I looked up an example on diesel directly. To omit that for future seekers, I provided an example.

Using-the-PostgreSQL-Backend.md

@@ -6,6 +6,8 @@ To run the binary or container ensure the ```DATABASE_URL``` environment variabl
 ```ini
 DATABASE_URL=postgresql://[[user]:[password]@]host[:port][/database]
 ```
+An example docker run environment variable would be: ```-e 'DATABASE_URL=postgresql://postgresadmin:strongpassword@postgres:5432/bitwardenrs'```.
+
 If your password contains special characters, you will need to use percentage encoding.
 
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