[docker] Fix docker-init missing FLASK_APP (#7709)
[docker] Fix docker-init missing FLASK_APP (#7709)


apache/incubator-superset,apache/incubator-superset,airbnb/caravel,mistercrunch/panoramix,airbnb/superset,airbnb/superset,apache/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix,apache/incubator-superset,airbnb/caravel,mistercrunch/panoramix,zhouyao1994/incubator-superset,airbnb/superset,airbnb/caravel,mistercrunch/panoramix,airbnb/caravel,apache/incubator-superset,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,airbnb/superset,zhouyao1994/incubator-superset