帮助命令
docker version #显示docker的版本信息
docker info #显示docker的系统信息，包括镜像和容器的数量
docker命令--help #帮助命令
帮助文档的地址：https://docs.docker.com/engine/reference/commandlinel
镜像命令：
docker images 显示所有镜像
docker images -a 显示所有的镜像
docker images -aq 显示所有镜像的id
搜索命令
docker search 镜像名称
docker search mysql --filter=stars=3000 搜索大于3000提交量的mysql镜像
docker pull 拉取镜像命令
docker pull 镜像名 不指定镜像版本则默认拉取最新版本镜像
docker pull mysql:5.7 指定版本的拉取镜像
上述拉取指定5.7版本的命令实际上等价于直径拉取镜像真是地址的命令：docker pull docker.io/library/mysql:5.7
docker rmi 删除镜像
docker rmi -f 镜像id 删除指定镜像
docker rmi -f $(docker images -aq) 删除所有的镜像
docker rmi -f 镜像id 镜像id 镜像id 删除指定的多个镜像
容器命令：
新建容器并启动
docker run [可选参数] image
#参数说明
- --name="Name"容器名字 tomcat01 tomcat02，用来区分容器
- -d后台方式运行
- -it使用交互方式运行，进入容器查看内容
- -p容器的端口-p 8080：8080
- -p ip：主机端口：容器端口
- -p主机端口：容器端口（常用）
- -p容器端口
- -P随机指定端口
退出容器
exit 退出当前所在的容器（注意这种方式容器会停止运行）
快捷键退出后台运行：ctrl + P + Q
容器进程查看命令： docker ps
docker ps 查看正在运行的容器
docker ps -a 查看所有正在运行和运行过得容器
docker ps -n=个数 显示最近创建的指定个数的容器
docker ps -aq 显示所有容器的id
删除容器：docker rm 容器id
docker rm 容器id 删除指定的容器（不能删除正在运行的容器，如果要强制删除则使用docker rm -f）
docker rm -f $(docker ps -aq) 删除所以的容器
启动和停止容器的操作
docker start 容器id #启动容器
docker restart 容器id #重启容器
docker stop 容器id #停止当前正在运行的容器
docker kill 容器id #强制停止当前容器
常用其他命令后台启动容器
#命令docker run-d镜像名！
[rootakuangshen/#docker run-d centos
#问题docker ps，发现centos停止了
#常见的坑：docker容器使用后台运行，就必须要有要一个前台进程，docker发现没有应用，就会自动停止
#nginx，容器启动后，发现自己没有提性服务，就会立刻停止，就是没有程序了
但是ctrl +P +Q 快捷键可以正常后台退出
查看容器日志
docker logs -tf --tail 条数 容器id 查看指定容器的指定条数的日志
查看容器内的进程
docker top 容器id
查看docker容器元数据
docker inspect 容器id
查看县关于容器的所有设置信息
[root@localhost ~]# docker inspect 1fefd1d2ea51 [ { "Id": "1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1", "Created": "2020-11-11T12:38:58.99005358Z", "Path": "docker-entrypoint.sh", "Args": [ "--cluster-enabled", "yes", "--cluster-config-file", "nodes-node-02.conf", "--port", "6380" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 3526, "ExitCode": 0, "Error": "", "StartedAt": "2020-11-18T01:31:16.80516048Z", "FinishedAt": "2020-11-18T01:07:40.896724932Z" }, "Image": "sha256:5958914cc55880091b005658a79645a90fd44ac6a33abef25d6be87658eb9599", "ResolvConfPath": "/var/lib/docker/containers/1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1/resolv.conf", "HostnamePath": "/var/lib/docker/containers/1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1/hostname", "HostsPath": "/var/lib/docker/containers/1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1/hosts", "LogPath": "/var/lib/docker/containers/1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1/1fefd1d2ea51fb1d0323b2c9c14cf701d7ef9cbecf1cf0d6834ad89254e2aac1-json.log", "Name": "/redis-node02", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": [ "redis-node02:/data" ], "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "host", "PortBindings": {}, "RestartPolicy": { "Name": "always", "MaximumRetryCount": 0 }, "AutoRemove": false, "VolumeDriver": "", "VolumesFrom": null, "CapAdd": null, "CapDrop": null, "Capabilities": null, "Dns": [], "DnsOptions": [], "DnsSearch": [], "ExtraHosts": null, "GroupAdd": null, "IpcMode": "private", "Cgroup": "", "Links": null, "OomScoreAdj": 0, "PidMode": "", "Privileged": false, "PublishAllPorts": false, "ReadonlyRootfs": false, "SecurityOpt": null, "UTSMode": "", "UsernsMode": "", "ShmSize": 67108864, "Runtime": "runc", "ConsoleSize": [ 0, 0 ], "Isolation": "", "CpuShares": 0, "Memory": 0, "NanoCpus": 0, "CgroupParent": "", "BlkioWeight": 0, "BlkioWeightDevice": [], "BlkioDeviceReadBps": null, "BlkioDeviceWriteBps": null, "BlkioDeviceReadIOps": null, "BlkioDeviceWriteIOps": null, "CpuPeriod": 0, "CpuQuota": 0, "CpuRealtimePeriod": 0, "CpuRealtimeRuntime": 0, "CpusetCpus": "", "CpusetMems": "", "Devices": [], "DeviceCgroupRules": null, "DeviceRequests": null, "KernelMemory": 0, "KernelMemoryTCP": 0, "MemoryReservation": 0, "MemorySwap": 0, "MemorySwappiness": null, "OomKillDisable": false, "PidsLimit": null, "Ulimits": null, "CpuCount": 0, "CpuPercent": 0, "IOMaximumIOps": 0, "IOMaximumBandwidth": 0, "MaskedPaths": [ "/proc/asound", "/proc/acpi", "/proc/kcore", "/proc/keys", "/proc/latency_stats", "/proc/timer_list", "/proc/timer_stats", "/proc/sched_debug", "/proc/scsi", "/sys/firmware" ], "ReadonlyPaths": [ "/proc/bus", "/proc/fs", "/proc/irq", "/proc/sys", "/proc/sysrq-trigger" ] }, "GraphDriver": { "Data": { "LowerDir": "/var/lib/docker/overlay2/2daa20e0ca5755bfde26935e859445f60e6f66f53a79d9734f766f713ec9d88a-init/diff:/var/lib/docker/overlay2/e8e48785efcb0fe20fed042dcd8c024e3ab7d9cf5d1be980f3a60e4121f26a82/diff:/var/lib/docker/overlay2/037252eba91a6a6878e14dc54370fc88cb28ae9381c75abbf9a207b17bb137a6/diff:/var/lib/docker/overlay2/b73ff579994d590a4ac10ab4761bb1173bced4893074cf543d9bcc94687db765/diff:/var/lib/docker/overlay2/9e8d2755a7bfb9652fb53df5f29b5ae1179c3aa6f889f664549f521861fa0097/diff:/var/lib/docker/overlay2/8d38e9f7d8a9cd01871ecf82379fae729b7c69b9e55b58d3ea160d97f0b5ccf9/diff:/var/lib/docker/overlay2/46f9f7bd24cbd4dec55bf1d767e5923ea09fe28ad9f4087dd5b6ce6367e9ca17/diff", "MergedDir": "/var/lib/docker/overlay2/2daa20e0ca5755bfde26935e859445f60e6f66f53a79d9734f766f713ec9d88a/merged", "UpperDir": "/var/lib/docker/overlay2/2daa20e0ca5755bfde26935e859445f60e6f66f53a79d9734f766f713ec9d88a/diff", "WorkDir": "/var/lib/docker/overlay2/2daa20e0ca5755bfde26935e859445f60e6f66f53a79d9734f766f713ec9d88a/work" }, "Name": "overlay2" }, "Mounts": [ { "Type": "volume", "Name": "redis-node02", "Source": "/var/lib/docker/volumes/redis-node02/_data", "Destination": "/data", "Driver": "local", "Mode": "z", "RW": true, "Propagation": "" } ], "Config": { "Hostname": "localhost.localdomain", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": true, "AttachStderr": true, "ExposedPorts": { "6379/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "GOSU_VERSION=1.10", "REDIS_VERSION=5.0.2", "REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-5.0.2.tar.gz", "REDIS_DOWNLOAD_SHA=937dde6164001c083e87316aa20dad2f8542af089dfcb1cbb64f9c8300cd00ed" ], "Cmd": [ "--cluster-enabled", "yes", "--cluster-config-file", "nodes-node-02.conf", "--port", "6380" ], "Image": "redis:5.0.2", "Volumes": { "/data": {} }, "WorkingDir": "/data", "Entrypoint": [ "docker-entrypoint.sh" ], "OnBuild": null, "Labels": {} }, "NetworkSettings": { "Bridge": "", "SandboxID": "f664f271af59a90220abd606f14757ab1c78ed113b8983647eb1f81b00fc2551", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": {}, "SandboxKey": "/var/run/docker/netns/default", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "", "Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "", "IPPrefixLen": 0, "IPv6Gateway": "", "MacAddress": "", "Networks": { "host": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "397dd96386f4b6c0d856cdd476ba6b5609c970d0f8955965dec39559f93331f7", "EndpointID": "6c1a0c138d5d13411157cd59954254a79bf30520b43b0b000908a4e144757d93", "Gateway": "", "IPAddress": "", "IPPrefixLen": 0, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "", "DriverOpts": null } } } } ]
进入当前正在运行的容器：
方式1：
docker exec -it 容器id bashshell
比如进入正在运行的centos容器：
docker exec -it
方式2：
docker attach 容器id 进入指定容器的上一次离开的进入状态
#docker exec#进入容器后开启一个新的终端，可以在里面操作（常用）
#docker attach#进入容器正在执行的终端，不会启动新的进程！
从容器内拷贝文件到宿主机上：（可以直接拷贝）
