404 after trying to install a Docker Utility Script

Hello all I am following this little guide on Azuracast: Docker Installation Guide | AzuraCast Docs and what this does is to install their utility script, I need it on my VPS, it uses a file named docker.sh but I always get the same error message, after sending this ./docker.sh install through the terminal, I get: :

Docker is already installed! Continuing...
/usr/local/bin/docker-compose: line 1: Not: command not found
Docker Compose does not appear to be installed. Install Docker Compose now? [Y/n] Y
curl: (22) The requested URL returned error: 404

What is wrong with me?

Ever tried to ask Azuracast? Afterall it’s their installer.

If it’s just about installing docker, you can use the convinence installer script: just follow the instructions from the documentation: Install Docker Engine on Ubuntu | Docker Documentation