使用docker部署提示"No application encryption key has been specified."

[Pefeng]

docker run -d -p 8000:8000 -e DB_HOST=xxxx
-e DB_DATABASE=xxxx
-e DB_USERNAME=xxxx
-e DB_PASSWORD=xxxx
--name webstack-laravel
arvon2014/webstack-laravel:v1.2.1

[Pefeng]

这个key需要怎么生成了

[CmderQ]

php artisan key:generate

[CmderQ]