Help command

• docker version
  • Displays the version information of docker
• docker info
  • Show docker details
• docker command -- help
  • View the help documentation for the command

Mirror command

• docker images
  • View all local mirrors
  • parameter
    • -a displays all mirrors
    • -q display id only
• docker search
  • You can also go to the docker hub to search for images
  • parameter
    • –filter
      • docker search mysql --filter=STARS=3000 only search for stars above 3000
• docker pull image
  • Download the image. You can keep up with the version later. docker pull image: tag. If you don't write, the default is latest, that is, the latest
  • Layered download, the core federated file system of docker image, will be introduced later
• docker rmi image id
  • To delete an image, rm means to delete an image
  • Delete all mirrors
    • docker rmi $(docker images -aq)

Container command

• docker run [optional parameter] image
  • Start container
  • parameter
    • – name = "name" container name
    • -d operate in the background mode, similar to nohub
    • -it runs interactively, entering the container to view the content
    • -p specifies the port of the container
      • -p ip: host port: container port
      • -p host port: container port (common)
      • -p container port
    • -P randomly assigned port
  • test

# Enter the container interactively
fujunhua@fujunhuadeMacBook-Air ~ % docker run -it centos /bin/bash
[root@c76e60706682 /]# ls
bin  dev  etc  home  lib  lib64  lost+found  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@c76e60706682 /]#

• exit
  • Exit container command
  • Exit without stopping: ctrl + p +q
• docker ps
  • View running containers
  • -a parameter allows you to view the history of previous runs + all currently running containers
  • -N displays the recently created container - n=1 displays only the latest one
  • -q displays the container number
• docker rm container id
  • Delete all containers docker rm -f $(docker ps -aq)
  • Note: if you want to delete a running container, you need to add the parameter - f
• docker start container id
  • Start container
• docker restart container id
  • Restart container
• docker stop container id
  • Stop running id
• docker kill container id
  • Force stop container

Other commonly used commands

• docker logs [optional parameter] container id
  • view log
  • -tf tracks data and displays a timestamp
  • – tail number displays the number of data in the tail
• docker top container id
  • View the process information inside the container
• Enter a running container
  • Mode 1
    • docker exec container id
  • Mode II
    • docker attach container id
  • difference
    • In mode 1, a new client will be opened, and in mode 2, it will enter the currently executing terminal
• Copy files from the container to the host
  • docker cp container di: host path
• docker inspect container id
  • View metadata for container

[
    {
        "Id": "1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4",
        "Created": "2022-01-16T07:53:58.7423733Z",
        "Path": "/bin/bash",
        "Args": [
            "-c",
            "while true;do echo hello;sleep 1;done"
        ],
        "State": {
            "Status": "exited",
            "Running": false,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 0,
            "ExitCode": 137,
            "Error": "",
            "StartedAt": "2022-01-16T07:53:59.2984293Z",
            "FinishedAt": "2022-01-16T07:55:13.3905686Z"
        },
        "Image": "sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6",
        "ResolvConfPath": "/var/lib/docker/containers/1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4/hostname",
        "HostsPath": "/var/lib/docker/containers/1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4/hosts",
        "LogPath": "/var/lib/docker/containers/1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4/1034277f7d1e825bbed15173a441ba63f3bfcacc9263be3c793955ba1bdfbff4-json.log",
        "Name": "/condescending_wu",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "CgroupnsMode": "private",
            "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": null,
            "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/overlay2/532d282bceb5837f369d07e93049428b6186522d7fbcc14fcd484e628bf32eac-init/diff:/var/lib/docker/overlay2/e02ce3392809941fc8f32a20554f285a62341cb1c417b3691f9fa3fef4fbe6bf/diff",
                "MergedDir": "/var/lib/docker/overlay2/532d282bceb5837f369d07e93049428b6186522d7fbcc14fcd484e628bf32eac/merged",
                "UpperDir": "/var/lib/docker/overlay2/532d282bceb5837f369d07e93049428b6186522d7fbcc14fcd484e628bf32eac/diff",
                "WorkDir": "/var/lib/docker/overlay2/532d282bceb5837f369d07e93049428b6186522d7fbcc14fcd484e628bf32eac/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "1034277f7d1e",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Cmd": [
                "/bin/bash",
                "-c",
                "while true;do echo hello;sleep 1;done"
            ],
            "Image": "centos",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "org.label-schema.build-date": "20210915",
                "org.label-schema.license": "GPLv2",
                "org.label-schema.name": "CentOS Base Image",
                "org.label-schema.schema-version": "1.0",
                "org.label-schema.vendor": "CentOS"
            }
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "8972234fb6a32e394f62df5fa6f360e7fde0ef8dc16604e3c3669adc67329d78",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/8972234fb6a3",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "92c36ac958105306e65d52f80c779b6b856913108b786248f0c97a4750ccab9f",
                    "EndpointID": "",
                    "Gateway": "",
                    "IPAddress": "",
                    "IPPrefixLen": 0,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "",
                    "DriverOpts": null
                }
            }
        }
    }
]

summary