Install a Mastodon Server on Ubuntu 20.04 Proposed Changes

[ADSTfowlerj]

Link: https://www.linode.com/docs/guides/install-mastodon-on-ubuntu-2004/

Issue

This line is incorrect: sudo curl -L https://github.com/docker/compose/releases/download/1.25.4/docker-compose-`uname -s-uname -m` -o /usr/local/bin/docker-compose

Suggested Fix

Add a letter 'v' in front of the docker compose version; e.g. sudo curl -L https://github.com/docker/compose/releases/download/v2.15.1/docker-compose-`uname -s-uname -m` -o /usr/local/bin/docker-compose

referenced here: https://stackoverflow.com/questions/58747879/docker-compose-usr-local-bin-docker-compose-line-1-not-command-not-found