libp2p-stardust is integrated with the libp2p Docker Hub organization. Docker containers are built for passing CI to the master branch and to tags. The libp2p infra team leverages these containers to deploy and host stardust servers for users to test with. These servers should not be relied on for Production applications.
If you wish to leverage stardust servers for your application, we recommend running your own as we currently do not guarantee uptime of the servers.