Let’s say you have a couple of Docker containers that run your favorite applications. You’d like to deploy these to some random server on the interwebs, so you lock down your Ubuntu server using the default UFW firewall, launch your containers and start using your applications.
This short guide is basically just a reminder to myself, where most of the content is based on Digital Ocean’s Initial Server Setup with Ubuntu 16.04 and my own memory.
Disabling the password needed for sudo for a specific user is very easy in Ubuntu. This method applies to Ubuntu 16.04, but probably also other versions of Ubuntu and maybe even other distros.