@jmtd Feels like I'm stalking you with all these replies but you've been posting interesting stuff ;-) I'm definitely keen to see the reproducible containers stuff. At #Adoptium we've got the builds reproducible but have not yet attempted to do so with the container images.
Also intrigued as to whether it's even possible with the dockerhub "official" images which they build from dockerfiles that are supplied to them.
Sadly, I'm not going to be there in person this year.