[FR] Implement fixes for misconfigurations in user Dockerfile

[aaron-prindle]

Implement top 2 recommendations for misconfigurations in users dockerfile

[tejal29]

Nice! thanks for creating this issue. The first one we want to recommend is:

1. If Dockerfile exists at root of the project with Copy . . exists, flag it. Reason being

   • It watches all .git, .vscode, .idea and
   • If user still wants to add Copy . . prompt user to add these files in .Dockerfileignore

2. Go through Best practices for docker and pick one
   https://docs.docker.com/develop/develop-images/dockerfile_best-practices/

[aaron-prindle]

Added tracking issue for DD for recommendation system here - #6122