进入docker

docker exec -it wordpress /bin/bash
root@1d8a4fbdaa6b:/var/www/html# cp /usr/local/etc/php/php.ini-production /usr/local/etc/php/php.ini
root@1d8a4fbdaa6b:/var/www/html# cd /usr/local/etc/php
root@1d8a4fbdaa6b:/usr/local/etc/php# apt-get update
root@1d8a4fbdaa6b:/usr/local/etc/php# apt-get install vim

vim php.ini
  /upload  查找upload修改

upload_max_filesize = 200M    #文件大小限制  
post_max_size = 250M    #post大小限制  
memory_limit = 500M        #内存占用限制

docker start