Each how-to is a single ordered procedure with no conceptual detours. If a guide references a concept you do not know, follow the link to the Explanation page that owns it.
Available guides
- Deploy a new version — ship a new image to a running App without downtime.
- Roll back a deploy — return to a previous image when a deploy goes wrong.
- Set environment variables — pass config and secrets.
- Deploy a private image — pull from a private registry by saving an account-level credential.
- Add a custom domain — serve the App from your own hostname with automatic TLS.