Update the Dockerfile. Now actually builds.
Update the Dockerfile. Now actually builds.

wfxiang08/livegrep,paulproteus/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,lekkas/livegrep,paulproteus/livegrep,paulproteus/livegrep,wfxiang08/livegrep,lekkas/livegrep,lekkas/livegrep,wfxiang08/livegrep,lekkas/livegrep,lekkas/livegrep,paulproteus/livegrep,lekkas/livegrep,paulproteus/livegrep,paulproteus/livegrep