Some times you want to run a simple database, API or other piece of sofware ond your local enviroment, but VMs use to be a bit of a pain. Docker solve all of this, and in combination with Portainer, you obtain a pretty useful web admin GUI, so let's get started!
Docker is a pretty usefull tool to deploy our applications in containers. In this post we will cover how to install Docker, and configure it in Swarm mode on some Raspberry Pi. Also, we will use Portainer (CE), which is a web interface for managing Docker.
Roundcube is a Webmail appliance, to simplify the use of mail servers. Is free and open source. This guide will cover all the needed steps to install and configure your own Roundcube instance for your needs.