Failed to start Docker Application Container Engine.
Sep 12 22:07:12 localhost.localdomain systemd[1]: docker.service: Scheduled restart job, restart counter is at 1.
Sep 12 22:07:12 localhost.localdomain systemd[1]: Stopped Docker Application Container Engine.
Sep 12 22:07:12 localhost.localdomain systemd[1]: Starting Docker Application Container Engine...
Sep 12 22:07:12 localhost.localdomain dockerd[129253]: unable to configure the Docker daemon with file /etc/docker/daemon.json: invalid character 'Â' looking for beginning of object key string
使用以下命令查看问题
journalctl -u docker.service
遇到这个问题，去掉daemon.json中的所有空格和制表符（以及其他非法字符）即可运行成功