Drops the stale Dockerfile
Drops the stale Dockerfile

zifeishan/deepdive,zifeishan/deepdive,HazyResearch/deepdive,zifeishan/deepdive,HazyResearch/deepdive,zifeishan/deepdive,sky-xu/deepdive,shahin/deepdive,zifeishan/deepdive,HazyResearch/deepdive,HazyResearch/deepdive,shahin/deepdive,sky-xu/deepdive