Add steps to install criu to the Dockerfile

Docker-DCO-1.1-Signed-off-by: Ross Boucher <[email protected]> (github: boucher)

Author: boucher

Diff for: Dockerfile

@@ -1,5 +1,8 @@
 FROM golang:1.4
 
+RUN echo "deb http://ftp.us.debian.org/debian testing main contrib" >> /etc/apt/sources.list
+RUN apt-get update && apt-get install -y criu=1.5.2-1 && rm -rf /var/lib/apt/lists/*
+
 RUN go get golang.org/x/tools/cmd/cover
 
 ENV GOPATH $GOPATH:/go/src/github.com/docker/libcontainer/vendor