Investigate improving app restart time in devc

[ericglau]

This issue is to investigate how app restart time can be improved when using devc.

Currently restarting an app in devc is slower than in regular dev mode. This may be related to the use of bind mounts for the loose application and various directories. See https://stackoverflow.com/questions/62493402/is-read-write-performance-better-with-docker-volumes-on-windows-inside-of-a-doc

Also consider whether using a non-loose application (e.g. using an actual war file) could help with this. Non-loose apps in dev mode are already possible with Gradle.