PX4-dev-simulation repository missing?

I was trying to run SITL this morning and when I tried to pull the px4-dev-simulation repository I get the following:

So I went and checked out the docker page and was presented with a 404 message:

https://hub.docker.com/r/px4io/px4-dev-simulation

Any idea whats up with this?

They’ve been renamed. There is a Bionic and Xenial version now. Just go up the tree to see them.
https://hub.docker.com/u/px4io

This changed here -> https://github.com/PX4/containers/commit/b6a7710f546f86633493879282fcbee68691ef74