Merge pull request #390 from GuiLeme/issue-388

Fix a command to not crash the installing process of GreenLight.

Author: antobinary

_posts/greenlight/2019-04-15-gl-install.md

@@ -143,7 +143,7 @@ docker run --rm bigbluebutton/greenlight:v2 cat ./docker-compose.yml > docker-co
 Finally, randomly generate a password for the PostgreSQL database and replace the entries in the `.env` and `.docker-compose.yml` file with this command
 
 ```bash
-export pass=$(openssl rand -base64 24); sed -i 's/POSTGRES_PASSWORD=password/POSTGRES_PASSWORD='$pass'/g' docker-compose.yml;sed -i 's/DB_PASSWORD=password/DB_PASSWORD='$pass'/g' .env
+export pass=$(openssl rand -hex 24); sed -i 's/POSTGRES_PASSWORD=password/POSTGRES_PASSWORD='$pass'/g' docker-compose.yml;sed -i 's/DB_PASSWORD=password/DB_PASSWORD='$pass'/g' .env
 ```
 
 Once you have completed these steps, from the `~/greenlight` directory, start the application using: