Fix example dockerfile

contrib/docker-build/example.changefile

@@ -6,7 +6,8 @@ run	echo 'deb http://archive.ubuntu.com/ubuntu quantal main universe multiverse'
 run	apt-get update
 # Install system packages
 run	DEBIAN_FRONTEND=noninteractive apt-get install -y -q git
-run DEBIAN_FRONTEND=noninteractive apt-get install -y -q curl
-run DEBIAN_FRONTEND=noninteractive apt-get install -y -q golang
+run	DEBIAN_FRONTEND=noninteractive apt-get install -y -q curl
+run	DEBIAN_FRONTEND=noninteractive apt-get install -y -q golang
 # Insert files from the host (./myscript must be present in the current directory)
-copy	myscript /usr/local/bin/myscript
+copy	myscript	/usr/local/bin/myscript
+push	/src