Fresh Ubuntu 18 droplet and followed steps:

apt update -y && apt install curl git -y

then

curl -s https://raw.githubusercontent.com/clean-docker/ghost-cms/master/dc | bash -s setup mydomain.com

But it fails instantly with:

root@ghost:~/ghost/ghost# curl -s https://raw.githubusercontent.com/clean-docker/ghost-cms/master/dc | bash -s setup lin
bla.io
bash: line 30: syntax error near unexpected token &&' bash: line 30: && echo 'Installing Docker...' '