Get your server ready.

Check Docker, available ports, and your management address. Then create a directory for your configuration.

What you need

Docker Engine, host ports 80 and 443 available, and inbound TCP and UDP traffic allowed on 443; the Compose plugin is not needed to start
The management UI is available locally at http://localhost:81
A public management origin plus an SMTP host, user, password, and sender address
The database and internal supporting services are included in the appliance
Data is kept in the persistent Docker volume

Create a working directory for RentnerProxy. Run all following commands from this directory.

mkdir rentnerproxy
cd rentnerproxy