Docker Rdesktop has now been shutdown, If you require RDP access to an isolated desktop container, you will need to find an alternative. Otherwise, we recommend transitioning to Webtop.
As mentioned on our blog, in the repositories issues, and our info channel Rdesktop and its base images will no longer be built by us or supported.
latest or branch (develop, nightly, etc.) tags and will need to use a specific version tag if you still need access to the image. You can read more about this here.