anchor.diff:  
   #Real conflicts with yii3
   # also needs mcrypt, php < 7.2
  -RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii2
   
   ###Possible Conflicts with yii3
   ###RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii2-debug 
  
positive.code: ###Possible conflicts with yii2
  
  
  RUN if [ $PHP_VERSION -lt 7.2 ] ; then echo "old php" ; else echo "new php"; fi
  
  ###Conflicts with php<7.2
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/di
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/view 
  
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-base-web
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-base-cli
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-base-api
  
  
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/log 
  
  # psr/log-implementation -> requires yiisoft/log
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/cache
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/rbac
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/db
  
  ##Real fails
  ##RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-dev
  
negative.code: RUN echo "LS: $(ls -l /cre/tmp/php/packages/)"
  
  
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-bootstrap4
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-bootstrap3
  RUN composer require --prefer-stable --update-with-all-dependencies yiisoft/yii-jquery
  