查詢Docker container運行狀態：
# docker ps
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
發現docker沒有啓動，使用如下命令啓動docker服務：
[root@okqvd ~]# service docker start
Redirecting to /bin/systemctl start docker.service
[root@okqvd ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
查詢docker信息：
[root@okqvd ~]# docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.09.6
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: bb71b10fd8f58240ca47fbb579b9d1028eea7c84
runc version: 2b18fe1d885ee5083ef9f0838fee39b62d653e30
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-862.14.4.el7.x86_64
Operating System: Red Hat Enterprise Linux Server 7.5 (Maipo)
OSType: linux
Architecture: x86_64
CPUs: 52
Total Memory: 149.5GiB
Name: hz-build-cloud-cbts02-okqvd.novalocal
ID: IVEY:IY4R:WWLW:4WQO:FTWJ:5LBB:EVJP:YGFX:DFI4:A3PS:F3QO:Q7JK
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
用dockerfile創建鏡像：
docker build -t docker-registry.eecloud.net/alice/hellowdockerfile .
docker build -t docker-registry.eecloud.net/alice:hellowdockerfile .
獲取image：
docker login -u user_name archive.docker-registry.eecloud.net
docker pull archive.docker-registry.eecloud.nsn-net.net/xxxserver:v2.4
創建容器：
docker run docker-registry.eecloud.net/alice:hellowdockerfile /bin/sh -c "while true;do echo hello world;sleep 1;done"
docker run -t -i docker-registry.eecloud.net/alice:hellowdockerfile /bin/bash
docker run -d docker-registry.eecloud.net/alice:hellowdockerfile /bin/sh -c "while true;do echo hello world;sleep 1;done" 守護態運行（-d參數）
啓動容器：
docker start 啓動已經停止的容器
進入容器：
docker attach 80ff07a0d82e
docker exec -it container_id /bin/bash
查看容器：
docker ps 列出運行的容器
docker ps -a 列出所有容器，包括已經停止的
停止容器：
docker stop container_id
刪除容器：
docker rm container_id
獲取容器的輸出信息：
docker logs 936
重啓容器：
docker restart
docker 入門到實踐： https://yeasy.gitbooks.io/docker_practice/content/