title: Copy all SBT dependencies to local folder
body: <p>I'm dockerizing my Play! Framework application and currently, my build is taking more than 15 minutes to complete. A large part of the process, it is actually downloading dependencies because my builder has no notion of caches yet. I thought, it would be a good idea to copy all the dependencies that my project needs, to a local folder so it doesn't have to download everything again and again. However, problem is, I don't know how to do that? I know SBT has a function that allows you to specify a local repo, but I'm unaware of a functionality that allows me to copy everything to a certain folder. </p>