[root@ht5 overlay2]# docker inspect 222e67a09d9a [ { "Id": "222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76", "Created": "2022-04-24T15:13:19.Z", "Path": "/docker-entrypoint.sh", "Args": [ "nginx", "-g", "daemon off;" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 79297, "ExitCode": 0, "Error": "", "StartedAt": "2022-04-24T15:13:20.Z", "FinishedAt": "0001-01-01T00:00:00Z" }, "Image": "sha256:faa5e615e51a72b17ad3fd1e01268f278a6684c8ed3c5f0cdce3f230b", "ResolvConfPath": "/var/lib/docker/containers/222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76/resolv.conf", "HostnamePath": "/var/lib/docker/containers/222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76/hostname", "HostsPath": "/var/lib/docker/containers/222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76/hosts", "LogPath": "/var/lib/docker/containers/222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76/222e67a09d9a83e9649fbe07bb0e54258b1b52a1d355aed74694ead5c758cd76-json.log", "Name": "/mycreate-nginx", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": [ "/usr/local/src/nginxcon:/usr/share/nginx/html" ], "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "default", "PortBindings": { "80/tcp": [ { "HostIp": "", "HostPort": "1080" } ] }, "RestartPolicy": { "Name": "no", "MaximumRetryCount": 0 }, "AutoRemove": false, "VolumeDriver": "", "VolumesFrom": null, "CapAdd": null, "CapDrop": null, "Dns": [], "DnsOptions": [], "DnsSearch": [], "ExtraHosts": null, "GroupAdd": null, "IpcMode": "shareable", "Cgroup": "", "Links": null, "OomScoreAdj": 0, "PidMode": "", "Privileged": false, "PublishAllPorts": false, "ReadonlyRootfs": false, "SecurityOpt": null, "UTSMode": "", "UsernsMode": "", "ShmSize": , "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, "DiskQuota": 0, "KernelMemory": 0, "MemoryReservation": 0, "MemorySwap": 0, "MemorySwappiness": null, "OomKillDisable": false, "PidsLimit": 0, "Ulimits": null, "CpuCount": 0, "CpuPercent": 0, "IOMaximumIOps": 0, "IOMaximumBandwidth": 0 }, "GraphDriver": { "Data": {
 //只读层 

"LowerDir": "/var/lib/docker/overlay2/e5a85b04886cea66fdebbdb29599f4a18b753c9db7edf53bdb3d42de72-init/diff:/var/lib/docker/overlay2/29f10b82508ba9c336b1a04b59e56e8fa02e16ca5500e7e/diff:/var/lib/docker/overlay2/e18f942e47c0de76700f07e4f466a1eada88af883d44a53cc0911aab/diff:/var/lib/docker/overlay2/4bef67178fea715b49f85a3049a7cc0b7ac4d64b1f356bdbf148e16700/diff:/var/lib/docker/overlay2/c341cf40a78d977bdeedfddeeb40eb7509a2d5f966a59ed48239a4827f/diff:/var/lib/docker/overlay2/34dd7d91e0cbbd8b1c6ca5a8502e5242f02c4547d1518e495e1f6/diff:/var/lib/docker/overlay2/230e6fbe9e9c2828da0ae965d6607fb55215bd3977b5af3991a9001bf0f300c4/diff", //联合层
　　　　　　　　　　"MergedDir": "/var/lib/docker/overlay2/e5a85b04886cea66fdebbdb29599f4a18b753c9db7edf53bdb3d42de72/merged", //可读写层
　　　　　　　　　　"UpperDir": "/var/lib/docker/overlay2/e5a85b04886cea66fdebbdb29599f4a18b753c9db7edf53bdb3d42de72/diff", //diff是差异的地方 "WorkDir": "/var/lib/docker/overlay2/e5a85b04886cea66fdebbdb29599f4a18b753c9db7edf53bdb3d42de72/work" }, "Name": "overlay2" }, "Mounts": [ { "Type": "bind", "Source": "/usr/local/src/nginxcon", "Destination": "/usr/share/nginx/html", "Mode": "", "RW": true, "Propagation": "rprivate" } ], "Config": { "Hostname": "222e67a09d9a", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "80/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "NGINX_VERSION=1.21.6", "NJS_VERSION=0.7.2", "PKG_RELEASE=1~bullseye" ], "Cmd": [ "nginx", "-g", "daemon off;" ], "Image": "nginx", "Volumes": null, "WorkingDir": "", "Entrypoint": [ "/docker-entrypoint.sh" ], "OnBuild": null, "Labels": { "maintainer": "NGINX Docker Maintainers <>" }, "StopSignal": "SIGQUIT" }, "NetworkSettings": { "Bridge": "", "SandboxID": "af6ab73fe9d3022da38de9b9087b4e036bce6d1a270", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": { "80/tcp": [ { "HostIp": "0.0.0.0", "HostPort": "1080" } ] }, "SandboxKey": "/var/run/docker/netns/af6ab", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "06c3ba61ebbf41c50ed0eb7486a96891b593bbec90e84f5482d", "Gateway": "172.17.0.1", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:11:00:03", "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "1caead2ab69fd0c57f3a39c4ed39cc2fde822ee682fb93b1", "EndpointID": "06c3ba61ebbf41c50ed0eb7486a96891b593bbec90e84f5482d", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:03", "DriverOpts": null } } } } ]
https://docs.docker.com/engine/reference/commandline/inspect/