adds dockerfile
adds dockerfile

Cantal0p3/nyu-devops-homework-1,ilanasufrin/nyu-devops-homework-1,Cantal0p3/nyu-devops-homework-1,ilanasufrin/nyu-devops-homework-1,ilanasufrin/nyu-devops-homework-1,Cantal0p3/nyu-devops-homework-1