Unable to pull or run docker image

[Guts]

Running docker commands as copied from readme:

> docker run -p 80:8080 ghcr.io/psf/httpbin
Unable to find image 'ghcr.io/psf/httpbin:latest' locally
docker: Error response from daemon: Head "https://ghcr.io/v2/psf/httpbin/manifests/latest": unauthorized.
See 'docker run --help'.
> docker pull ghcr.io/psf/httpbin
Using default tag: latest
Error response from daemon: Head "https://ghcr.io/v2/psf/httpbin/manifests/latest": unauthorized

Environment:

Ubuntu 22.04.x up to date

> docker --version
Docker version 24.0.5, build ced0996