Some repos work with actions, others don't

Actions not recognised here:

https://github.com/billglover/hello-container/

Actions recognised here:

https://github.com/billglover/go-adsb-console

Strangely, if I visit the Actions sign-up page I’m told my account is still in a queue for the beta. This seems odd as I already have actions working with some of my repos. Any thoughts on what I’ve missed?

This issue is now resolved with the transition to GA for GitHub Actions.