OpenVPN for Docker

OpenVPN server in a Docker container complete with an EasyRSA PKI CA. Extensively tested on Digital Ocean $5/mo node and has a corresponding Digital Ocean Community Tutorial. Pick a name for the $OVPN_DATA data volume container. It's recommended to use the ovpn-data- prefix to operate seamlessly with the reference systemd service. Users are encourage to replace example with a descriptive name of their choosing. Initialize the $OVPN_DATA container that will hold the configuration files and certificates. The container will prompt for a passphrase to protect the private key used by the newly generated certificate authority. Miscellaneous write-ups for advanced configurations are available in the docs folder. A systemd init script is available to manage the OpenVPN container. It will start the container on system boot, restart the container if it exits unexpectedly, and pull updates from Docker Hub to keep itself up to date.