# Containers ### Commands #### Run container ``` container run - p 80:80 -d --name webserver nginx ``` pass "`--rm`" to remove container when it stops. #### List all containers (pass -a to see all containers) ``` docker container ls [-a] ``` #### Get logs from container ``` docker container logs ``` #### List running processes in the container ``` docker container top ``` #### Get system information about running containers ``` docker container stats ``` #### Get metadata about running container ``` docker container inspect ``` Example: ```javascript [ { "Id": "2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7", "Created": "2020-01-13T01:27:41.8547458Z", "Path": "nginx", "Args": [ "-g", "daemon off;" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 2513, "ExitCode": 0, "Error": "", "StartedAt": "2020-01-13T01:27:42.7242686Z", "FinishedAt": "0001-01-01T00:00:00Z" }, "Image": "sha256:c7460dfcab502275e9c842588df406444069c00a48d9a995619c243079a4c2f7", "ResolvConfPath": "/var/lib/docker/containers/2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7/resolv.conf", "HostnamePath": "/var/lib/docker/containers/2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7/hostname", "HostsPath": "/var/lib/docker/containers/2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7/hosts", "LogPath": "/var/lib/docker/containers/2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7/2471fee7e410a4ba48e69e80ecdc7033f46f7012ca493d1dba92dc9a6fda46f7-json.log", "Name": "/webserver", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": null, "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "default", "PortBindings": { "80/tcp": [ { "HostIp": "", "HostPort": "80" } ] }, "RestartPolicy": { "Name": "no", "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/a4d587b17605cd7d55e5e4e53ca94f85eb3873717774c7ccaf2ffdbfda7ede6f-init/diff:/var/lib/docker/overlay2/b0b1f6dce35e8f037a3f0bd7310c9d262bfbe50bf2a99d8d1d5bb9a8c2d674e7/diff:/var/lib/docker/overlay2/d2a2f0e8c23a861795bcab3d13f17ca643c17a9b97c74c85696393828186cb1a/diff:/var/lib/docker/overlay2/a20f4c7748e1f828f0d533783d04930c7f16d6435dbebe4b093dd7c05488b666/diff", "MergedDir": "/var/lib/docker/overlay2/a4d587b17605cd7d55e5e4e53ca94f85eb3873717774c7ccaf2ffdbfda7ede6f/merged", "UpperDir": "/var/lib/docker/overlay2/a4d587b17605cd7d55e5e4e53ca94f85eb3873717774c7ccaf2ffdbfda7ede6f/diff", "WorkDir": "/var/lib/docker/overlay2/a4d587b17605cd7d55e5e4e53ca94f85eb3873717774c7ccaf2ffdbfda7ede6f/work" }, "Name": "overlay2" }, "Mounts": [], "Config": { "Hostname": "2471fee7e410", "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=1.17.7", "NJS_VERSION=0.3.7", "PKG_RELEASE=1~buster" ], "Cmd": [ "nginx", "-g", "daemon off;" ], "Image": "nginx", "Volumes": null, "WorkingDir": "", "Entrypoint": null, "OnBuild": null, "Labels": { "maintainer": "NGINX Docker Maintainers " }, "StopSignal": "SIGTERM" }, "NetworkSettings": { "Bridge": "", "SandboxID": "dac7e1d502934740d4bdcedf1756d75514e4a5387bae842a6770026886d9eeaf", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": { "80/tcp": [ { "HostIp": "0.0.0.0", "HostPort": "80" } ] }, "SandboxKey": "/var/run/docker/netns/dac7e1d50293", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "d3731f0e83b1ee4bc67f9221c0056e2eef91b8e3ea2e86636765bbad13b35b9f", "Gateway": "172.17.0.1", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:11:00:02", "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "45ecc9dd0aa8816755250010c1b01d899e2de4700db943e6ed8d6224c56bf9e7", "EndpointID": "d3731f0e83b1ee4bc67f9221c0056e2eef91b8e3ea2e86636765bbad13b35b9f", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:02", "DriverOpts": null } } } } ] ``` #### Stop running container ```bash docker container stop ``` #### Remove container (pass -f to force remove container) ```bash docker container [-f] rm ``` #### Start container with different process then defined in CMD or ENTRYPOINT ```bash docker container run -it --name webserver nginx bash ``` will start "bash" in interactive mode in "nginx" container named "webserver". Once connected, a "ps" can be installed to make sure the only process running is "bash" ```bash apt-get update apt-get install -y procps ps aux ``` #### Connect to the running docker container and run shell Connect to running container with shell (depends whether specific shell is installed) ```bash docker container exec -it bash ``` #### List container port mappings: ```bash docker container port ``` if container has a host to container port mappings, command should produce something like:\ `80/tcp -> 0.0.0.0:80` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://notebook.iuriioapps.com/containers-and-microservices/docker/containers.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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