Docker – what’s that all about??

There have been lots of posts about Docker on the FreeNAS forums over the last 12 months, and I didn’t pay much attention to them. I could do everything I needed through a combination of Jails and VirtualBox VM’s so why did I need Docker? Well, to be honest, I still don’t know, but I have managed to create a bhyve VM running RancherOS and Portainer so I can try and find out!