Changed docker hub pointer to dockercore

Makefile

@@ -1,13 +1,13 @@
 
 all:
-	docker build -t docker/libcontainer .
+	docker build -t dockercore/libcontainer .
 
 test: 
 	# we need NET_ADMIN for the netlink tests and SYS_ADMIN for mounting
-	docker run --rm -it --privileged docker/libcontainer
+	docker run --rm -it --privileged dockercore/libcontainer
 
 sh:
-	docker run --rm -it --privileged -w /busybox docker/libcontainer nsinit exec sh
+	docker run --rm -it --privileged -w /busybox dockercore/libcontainer nsinit exec sh
 
 GO_PACKAGES = $(shell find . -not \( -wholename ./vendor -prune -o -wholename ./.git -prune \) -name '*.go' -print0 | xargs -0n1 dirname | sort -u)