Hi @GerardM5!
I see in Docker Hub that gerardm5/libreta.jar:0.0.1 is already a linux/amd64 image. However, did you initially push/try to deploy a linux/arm64 image with the same tag?
If so, then we may have cached the gerardm5/libreta.jar:0.0.1 image reference as an arm64 image. The simplest thing to try would be to push the amd64 image to a new tag and to deploy the new tag instead. Using :latest may also work, since it will avoid the cache.
(If you really need to use the :0.0.1 tag, then I could also ask internally about manually checking/clearing the cache.)