A Docker Compose + GNU Make setup to make the kylemanna/openvpn Docker image even easier to use.
In order to initialize the public key infrastructure (PKI) needed by OpenVPN, use:
make init server=vpn.example.org
Where the server value should be the IP or hostname of the VPN server. The same input should be informed when it asks for the server Common Name.
The initialization setup will ask you to Enter PEM pass phrase, which can be any string from 4 to 1023 characters. This passphrase will be needed by every operation which creates server or client certificates. If it is lost, the PKI has to be recreated.
To start the server, use:
make up
To create a new client, use:
make genclient name=johndoe
Where name value can be any string used to identify a client later. It will ask for the private key passphrase defined before.
To get the OpenVPN ready-to-use configuration file (with embedded client certificate and private key), use:
make getclient name=johndoe
A johndoe.ovpn file will be created on the current directory. It can be used by an OpenVPN client to connect to the server.