Fixes: Extra: 1) Correct capitalization of CODEOWNERS entries for @SaVBaD.
Dockerfile.app
CODEOWNERS
Dockerfile.storefront
.gitkeep
Fixes: 1) Update `docker-compose.yml` to use `Dockerfile.app` instead of default build context; Extra: 1) Add commented-out `storefront` service in `docker-compose.yml` for potential future use; 2) Minor cleanup and structuring of Docker setup;