In [Installing a Mastodon Server on Ubuntu 16.04](https://www.linode.com/docs/guides/install-mastodon-on-ubuntu-1604/): In the linked docker-compose file: https://www.linode.com/docs/guides/install-mastodon-on-ubuntu-1604/docker-compose.yml These external links are broken and should be removed, as they pose a security risk: https://github.com/usbsnowcrash/docker-privoxy.git https://github.com/usbsnowcrash/docker-tor.git GitHub: https://github.com/linode/docs/blob/develop/docs/guides/applications/messaging/install-mastodon-on-ubuntu-1604/docker-compose.yml#L94