asciinema server on Ubuntu 24.04 LTS

Why the cloudimg image

The cloudimg image is the whole appliance rather than the application alone: the upstream release pinned to an immutable image digest so the version never drifts, PostgreSQL co hosted on the same machine, and nginx already fronting the application as the only entry point. Recordings, the render cache and the database all sit on a dedicated, independently resizable data volume that is re provisioned with every instance. It is secure by default rather than open on arrival: upstream asciinema server hands administrator rights to the first account that registers and leaves public sign up open, so instead every launch closes sign up before the server accepts a single connection and claims the administrator account for itself during first boot, and the web front door stays shut until that lock down has completed. A unique session signing key, database password and command line upload token are generated per instance and written to a root only file, so no two deployments share a secret. Each instance learns its own address on first boot, so the share links it hands back to the command line tool are correct and reachable immediately, and because no mail relay is needed a root only helper mints a fresh sign in link on demand. The upstream administration panel authenticates nobody on its own, so it is kept off the network entirely and reached only behind an administrator session. Every image comes with a step by step deployment guide written and executed against the running product, and 24/7 support from cloudimg.