Tweak the kubectl script to make running the proxy easy

scripts/kubectl

@@ -16,10 +16,14 @@ if [ $? -ne 0 ]; then
     pull_container
 fi;
 
+if [ "${1}" = "proxy" ]; then
+    PROXY_ARGS="-p 8001:8001";
+fi;
+
 # http://blog.dscpl.com.au/2015/12/unknown-user-when-running-docker.html
 # Passing LOGNAME and USER because the acs component in the azure-cli does some
 # user lookup
-exec docker run --rm  -u $(id -u):$(id -g) \
+exec docker run --rm  -u $(id -u):$(id -g) ${PROXY_ARGS} \
     -v ${PWD}/.kube:/.kube \
     -v ${REPO_DIR}/ssh_key:/.ssh \
     -e LOGNAME=$LOGNAME \