Seem to have convolutedly sorted this by copying the startup script inside the image, modifying it so that it stops cf at the end and running it in the base image code

This may be of interest @Jedihomer Townend ? https://www.ortussolutions.com/blog/easy-bake-multi-tier-deployments-using-commandbox-docker-images

as our Danish friend mentions 💀 the Ortus multistage build will point you in the right direction

We use commandbox in docker and use the warmup script. We then run our tests as part of our build which effectively compiles most of our app - have save classes on - then push the “warmed up” image to our docker repo.