docker日志清理

sudo truncate -s 0  /var/lib/docker/containers/420f0b682e656a5aa3a8e56507c8ec9abde66474a5d6dfd68a4aa4477a3860f1/420f0b682e656a5aa3a8e56507c8ec9abde66474a5d6dfd68a4aa4477a3860f1-json.log