This might be an issue on my part, but when trying to install from the CA, I get this error:
Unable to find image 'ghcr.io/binhex/arch-readarr:latest' locally
docker: Error response from daemon: Head "https://ghcr.io/v2/binhex/arch-readarr/manifests/latest": unauthorized.
I'm definitely not a very experienced user, so I could be wrong, but this doesn't seem like something that I did wrong.