Update docker-compose.mdx

Author: egelhaus

pages/installation/docker-compose.mdx

@@ -7,6 +7,10 @@ import DockerEnvvarApps from '../../components/snippets/docker-envvar-apps.mdx';
 import { Cards } from 'nextra/components';
 import Prereqs from '../../components/snippets/installation-pre-reqs.mdx';
 
+<Callout>
+Watch the Tutorial for docker-compose install: https://m.youtube.com/watch?v=A6CjAmJOWvA&t=5s
+</Callout>
+
 ## Docker Compose
 
 This guide assumes that you have docker installed, with a reasonable amount of resources to run Postiz. This Docker Compose setup has been tested with;