fix bug : docker build error with no permission with this floder (#6226)
fix bug : docker build error with no permission with this floder (#6226)

要提交的变更：
	修改：     contrib/docker/Dockerfile
airbnb/superset,mistercrunch/panoramix,mistercrunch/panoramix,airbnb/caravel,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,airbnb/superset,apache/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix,airbnb/caravel,mistercrunch/panoramix,apache/incubator-superset,apache/incubator-superset,apache/incubator-superset,airbnb/superset,airbnb/caravel,zhouyao1994/incubator-superset,airbnb/superset,airbnb/caravel