Unmount mounts we don't want

Author: ibuildthecloud

package/entry.sh

@@ -41,6 +41,11 @@ EOF
 fi
 
 if [ "$1" == "kubelet" ]; then
+    for i in $(DOCKER_API_VERSION=1.22 ./docker info 2>&1  | grep -i 'docker root dir' | cut -f2 -d:) /var/lib/docker /run /var/run; do
+        for m in $(tac /proc/mounts | awk '{print $2}' | grep ^${i}/); do
+            umount $m || true
+        done
+    done
     mount --rbind /host/dev /dev
     FQDN=$(hostname --fqdn || hostname)
     exec "$@" --hostname-override ${FQDN}