Docker -- very very [very] slow

General
1 
[#]$ docker run --rm busybox true
... to pull the image locally ...
[#]$ time docker run --rm busybox true

real	2m3.469s
user	0m0.020s
sys	0m0.013s

Fresh installation, Linux 5.18.5-arch1-1, docker v20.10.17

Why is this that slow? Anything to check?

2

Is the CPU under heavy load?
Is the system out of memory and using swap
Is the disk slow?

3

none of this. All other processes are quick and reactive.