1.宿主机至容器
格式：docker cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH
如：docker cp /root/ocj/LocalSettings.php 7e2596acc293:/var/www/html
2.容器至宿主机
格式：docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH
如：docker cp 7e2596acc293:/var/www/html/LocalSettings.php /root/ocj/LocalSettings.php