这个问题出现呢，是因为用户权限问题。解决方法有2个：
- 切换为root用户执行命令。
sudo docker-compose up -d - 将当前用户加入到docker组。
sudo gpasswd -a ${USER} docker然后切换成root用户，再切换为当前用户，再次执行docker-compose up -d，就没有问题了。
➜ /usr/local/tidb-docker-compose git:(master) sudo gpasswd -a penelope docker
正在将用户“penelope”加入到“docker”组中
➜ /usr/local/tidb-docker-compose git:(master) su -
密码：
root@wjj-PC:~# su - penelope
➜ /home/penelope cd /usr/local/tidb-docker-compose
➜ /usr/local/tidb-docker-compose git:(master) docker-compose up -d
Creating network "tidb-docker-compose_default" with the default driver
Creating tidb-docker-compose_prometheus_1_c5dcdc31242f ... done
Creating tidb-docker-compose_pd0_1_76eba4089930 ... done
Creating tidb-docker-compose_dashboard-installer_1_aacf66ea2abb ... done
Creating tidb-docker-compose_pd1_1_37f2e3342d08 ... done
Creating tidb-docker-compose_pushgateway_1_6bdd0daf84ee ... done
Creating tidb-docker-compose_pd2_1_8f3958f98cb1 ... done
Creating tidb-docker-compose_grafana_1_b1171d4ef96c ... done
Creating tidb-docker-compose_tidb-vision_1_1cfffb488802 ... done
Creating tidb-docker-compose_tikv2_1_e8dda83dee83 ... done
Creating tidb-docker-compose_tikv0_1_df5a641d13f5 ... done
Creating tidb-docker-compose_tikv1_1_7d2d291b11a7 ... done
Creating tidb-docker-compose_tispark-master_1_6d1132a4e105 ... done
Creating tidb-docker-compose_tidb_1_8c9570604565 ... done
Creating tidb-docker-compose_tispark-slave0_1_722ac312ba0e ... done