Bump scala-packager to 0.2.1 & enable adding extra directories to a docker image#3908

Gedochao merged 5 commits intoVirtusLab:mainVirtusLab/scala-cli:mainfrom

Gedochao:update/scala-packager-0.2.1Gedochao/scala-cli:update/scala-packager-0.2.1Copy head branch name to clipboard