As for Docker, honestly, I'll have to go back and replicate the error. I was using VNC and it was so slow I was getting annoyed, so saw the error pop up and decided to spend time outside with the family. This was my
4gb PI4. I have yet to install my 8gb PI4, which I hope is faster
using VNC. Either way, I'll watch some videos.

Ponder, I've found VNC is more reliant on network speed than anything else, what kind of NIC's do you have, and does network speed seem ok otherwise? I don't have a lot of grunt running what VNC action I have going, admittedly
the sabretooth server end is an 8 core AMD FX chipset..so that does have some grunt, also running Gb Nic, and the client end is a rather old Core2 Quad
Core. Performace out of this lot is acceptable, over Fast or Gb ethernet.

Spec

--- SuperBBS v1.17-3 (Eval)
* Origin: Scrawled in haste at The Lower Planes (21:3/101)