I need to use docker to build static linked Linux executables. My reason is specific, may be different than the OP's. I'm using Travis-CI to build executables. Travis-CI uses Ubuntu 14.04, but static linking fails on 14.04. The standard C library from Ubuntu 16.04 or later is needed. There may be other/better ways to do this, I don't know.
Yes I'm also using Travis-CI and that's why I need some Docker support.