docker 删除没权限，Error response from daemon: container : driver "overlay2" failed to remove root filesystem: unlinkat /var/lib/docker/overlay2: operation not permitted

解决：

➜  ~ docker rm -f 339d
Error response from daemon: container 339d38e35e40a81630c6afbe3b25d926ec6ccd3fddfa0e394e00d89fbb9be632: driver "overlay2" failed to remove root filesystem: unlinkat /var/lib/docker/overlay2/50bd32b3cf8c17e88cbda61573fe1d5e96dcc3beee2c8f8134c30027887756f2/diff/home/acunetix/.acunetix/data/license/license_info.json: operation not permitted
➜  ~ chattr -i /var/lib/docker/overlay2/50bd32b3cf8c17e88cbda61573fe1d5e96dcc3beee2c8f8134c30027887756f2/diff/home/acunetix/.acunetix/data/license/*                
➜  ~ docker rm 339d
339d