Since PlayerServers v3, we now offer Docker support as well for those that care about security and network isolation of their subservers.
Docker adds a secure isolation layer to your PlayerServers, so you can safely allow players to install all sorts of plugins without being afraid of them breaking something.
For a quick install of Docker CE, you can execute the command below:
curl -sSL https://get.docker.com/ | CHANNEL=stable bash
After successfully installing docker, you can enable docker support inside your config.yml.