anchor.diff:  RUN composer require --prefer-stable --update-with-all-dependencies psr/http-server-handler
   RUN composer require --prefer-stable --update-with-all-dependencies psr/http-server-middleware
   
  -#
  -RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/cache
   
   #Real conflicts with yii2
   #RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-core
  
positive.code: 
  
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/di
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/rbac
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/view  
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/db
  
  
negative.code: 
  ###Conflicts with php<7.2
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/log 
  
  
  # psr/log-implementation 
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/cache
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/rbac
  
  
  ##Real fails
  ##RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-dev
  