---------Install Docker on Fedora 23
dnf update -y
dnf -y install docker-io
systemctl start docker
systemctl start docker.service
systemctl restart docker.service
systemctl stop docker.service
systemctl status docker.service
systemctl status docker -l
^^^^^^宿主机测试
docker images
docker search centos
docker pull centos
docker images
docker tag 2933d50b9f77 docker.io/centos:core
docker run centos echo "hello world!"
^^^^^^至此，宿主机 OK
docker run --rm -it centos /bin/bash
docker run --rm -it -d centos /bin/bash
docker run --rm centos echo "hello world!"
docker run centos echo "hello world!"
docker run --cap-add=NET_ADMIN --cap-add=SYS_ADMIN centos echo "hello world!"
docker run --privileged -ti -v /sys/fs/cgroup:/sys/fs/cgroup centos echo "hello world!"
docker run --privileged -ti -e "container=docker" -v /sys/fs/cgroup:/sys/fs/cgroup centos /usr/sbin/init