[Docker] Docker 명령어(1)

이미지(image) 다운로드 (docker pull)

docker pull [옵션] 이미지명[:태그]

$ docker pull centos:7

7: Pulling from library/centos
2d473b07cdd5: Pull complete
Digest: sha256:0f4ec88e21daf75124b8a9e5ca03c37a5e937e0e108a255d890492430789b60e
Status: Downloaded newer image for centos:7
docker.io/library/centos:7

이미지(image) 목록 (docker images)

docker images [옵션] [repository명]

옵션	설명
--all, -a	모든 이미지 표시
--digests	다이제스트를 표시할지 말지
--no-trunc	결과를 모두 표시
--quiet, -q	Docker image ID만 표시

$ docker images

REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
nginx        latest    f6d0b4767a6c   2 weeks ago    133MB
centos       7         8652b9f0cb4c   2 months ago   204MB

$ docker images nginx

REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
nginx        latest    f6d0b4767a6c   2 weeks ago   133MB

이미지(image) 상세정보 (docker inspect)

docker inspect 이미지명[:태그]

$ docker image inspect centos:7

[
    {
        "Id": "sha256:67fa590cfc1c207c30b837528373f819f6262c884b7e69118d060a0c04d70ab8",
        "RepoTags": [
            "centos:7"
        ],
        "RepoDigests": [
            "centos@sha256:307835c385f656ec2e2fec602cf093224173c51119bbebd602c53c3653a3d6eb"
        ],
        "Parent": "",
        "Comment": "",
        "Created": "2019-08-20T20:21:01.219060918Z",
        "Container": "c77d57543414f78d333710b96b816033f91a246d606e4dd644e75051719a88c3",
        "ContainerConfig": {
            "Hostname": "c77d57543414",
            "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/sh",
                "-c",
                "#(nop) ",
                "CMD [\"/bin/bash\"]"
            ],
            "ArgsEscaped": true,
            "Image": "sha256:4c66d610f9092e18227ae1d0de68350d3da2875452762261ccf1c552462dd90d",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "org.label-schema.build-date": "20190801",
                "org.label-schema.license": "GPLv2",
                "org.label-schema.name": "CentOS Base Image",
                "org.label-schema.schema-version": "1.0",
                "org.label-schema.vendor": "CentOS"
            }
        },
        "DockerVersion": "18.06.1-ce",
        "Author": "",
        "Config": {
            "Hostname": "",
            "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"
            ],
            "ArgsEscaped": true,
            "Image": "sha256:4c66d610f9092e18227ae1d0de68350d3da2875452762261ccf1c552462dd90d",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "org.label-schema.build-date": "20190801",
                "org.label-schema.license": "GPLv2",
                "org.label-schema.name": "CentOS Base Image",
                "org.label-schema.schema-version": "1.0",
                "org.label-schema.vendor": "CentOS"
            }
        },
        "Architecture": "amd64",
        "Os": "linux",
        "Size": 201878234,
        "VirtualSize": 201878234,
        "GraphDriver": {
            "Data": {
                "MergedDir": "/var/lib/docker/overlay2/095871ba6ccbde1ce55f880453cfbba7db253bf8a9fd3a343033ca08197901e7/merged",
                "UpperDir": "/var/lib/docker/overlay2/095871ba6ccbde1ce55f880453cfbba7db253bf8a9fd3a343033ca08197901e7/diff",
                "WorkDir": "/var/lib/docker/overlay2/095871ba6ccbde1ce55f880453cfbba7db253bf8a9fd3a343033ca08197901e7/work"
            },
            "Name": "overlay2"
        },
        "RootFS": {
            "Type": "layers",
            "Layers": [
                "sha256:877b494a9f30e74e61b441ed84bb74b14e66fb9cc321d83f3a8a19c60d078654"
            ]
        },
        "Metadata": {
            "LastTagTime": "0001-01-01T00:00:00Z"
        }
    }
]

이미지(image) 태그 설정(docker tag)

docker tag 원본이미지 태그이미지
단 docker hub에 push 하기 위해서는 Docker hub 사용자명/이미지명:[태그명] 형식으로 태그이미지를 지정해야한다.

$ docker tag centos:7 ysg:1.0
$ docker images

REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
nginx        latest    f6d0b4767a6c   2 weeks ago    133MB
centos       7         8652b9f0cb4c   2 months ago   204MB
ysg          1.0       8652b9f0cb4c   2 months ago   204MB

Docker Hub에서 이미지(image) 검색 (docker search)

docker search [옵션] <검색키워드>

$ docker search nginx

NAME                               DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
nginx                              Official build of Nginx.                        14372     [OK]
jwilder/nginx-proxy                Automated Nginx reverse proxy for docker con…   1951                 [OK]
richarvey/nginx-php-fpm            Container running Nginx + PHP-FPM capable of…   804                  [OK]
.... 
wodby/nginx                        Generic nginx                                   1                    [OK]

이미지(image) 삭제 (docker rmi / docker image prune)

docker rmi [옵션] 이미지명

옵션	설명
--force, -f	이미지를 강제로 삭제

$ docker images

REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
nginx        latest    f6d0b4767a6c   2 weeks ago    133MB
centos       7         8652b9f0cb4c   2 months ago   204MB
ysg          1.0       8652b9f0cb4c   2 months ago   204MB

$ docker rmi ysg:1.0

Untagged: ysg:1.0

$ docker images

REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
nginx        latest    f6d0b4767a6c   2 weeks ago    133MB
centos       7         8652b9f0cb4c   2 months ago   204MB

docker image prune [옵션]

옵션	설명
--force, -f	이미지를 강제로 삭제
--all, -a	사용하지 않은 이미지 모두 삭제

Docker Hub 로그인 (docker login)

docker login [옵션] [서버]

$ docker login

Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: sanggil1107
Password: 
WARNING! Your password will be stored unencrypted in /home/ysg/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

docker hub에 push하기 위해 nginx 이미지 기반으로 태그이미지를 생성한다.

$ docker pull nginx

Using default tag: latest
latest: Pulling from library/nginx
8d691f585fa8: Pull complete 
5b07f4e08ad0: Pull complete 
abc291867bca: Pull complete 
Digest: sha256:922c815aa4df050d4df476e92daed4231f466acc8ee90e0e774951b0fd7195a4
Status: Downloaded newer image for nginx:latest

$ docker image tag nginx sanggil1107/ysgnginx:1.0
$ docker images

REPOSITORY             TAG       IMAGE ID       CREATED        SIZE
sanggil1107/ysgnginx   1.0       f6d0b4767a6c   2 weeks ago    133MB
nginx                  latest    f6d0b4767a6c   2 weeks ago    133MB
centos                 7         8652b9f0cb4c   2 months ago   204MB

이미지(image) 업로드 (docker push)

docker push 이미지명[:태그명]

$ docker push sanggil1107/ysgnginx:1.0

The push refers to repository [docker.io/sanggil1107/ysgnginx]
a89b8f05da3a: Pushed 
6eaad811af02: Pushed 
b67d19e65ef6: Pushed 
1.0: digest: sha256:f56b43e9913cef097f246d65119df4eda1d61670f7f2ab720831a01f66f6ff9c size: 948

Docker hub 로그아웃 (docker logout)

docker logout [서버명]

$ docker logout

Removing login credentials for https://index.docker.io/v1/