nginx-associate-port-to-domain.sh

#!/usr/bin/env bash

if [ "$#" -ne 2 ]; then
  echo 'nginx-associate-port-to-domain [port] [domain]'
  exit 1
fi

cat <<EOF > "/etc/nginx/sites-available/$2"
server
{
    listen 80;
    listen [::]:80;
    server_name $2;

    location /
    {
        proxy_pass http://127.0.0.1:$1;
        include /etc/nginx/proxy_params;
    }
}
EOF

ln -s "/etc/nginx/sites-available/$2" "/etc/nginx/sites-enabled/$2"