[action-manager][action-manager-backend] Optimized docker images for Spring Boot applications with layering feature

[hvantran]

See the post: https://redamessoudi.com/optimized-docker-images-for-spring-boot-apps/

[hvantran]

Apply the solution from the above post, the docker image build time is decreased, because it used cache to build image

The application code layer only takes 264kB