Use sbt command project before compile and run in sbt. is defined in build.sbt
Usefull link for setting up GPG signing: https://gist.github.com/troyfontaine/18c9146295168ee9ca2b30c00bd1b41e
Usefull link for clearing commit history (clearing up al my signing attemps) https://stackoverflow.com/questions/13716658/how-to-delete-all-commit-history-in-github