- A Linux server. The installer sets Docker up for you when it is missing, using Docker's own install script, and starts it.
- On macOS the installer starts OrbStack or Docker Desktop, and installs OrbStack through Homebrew when neither is there.
- 8 GB of RAM recommended. The agent alone uses 3.6 to 3.9 GB while it reads a busy mailbox, and Postgres, the API and the app need room beside it. 4 GB is too little for the whole stack.
- 20 GB of free disk space for the images, the database and backups.
opensslandcurl. Most distributions ship both.- For a public install: a domain name whose DNS record points at the server, and ports 80 and 443 open.
The images are built for linux/amd64 and linux/arm64.