在本地創建一個容器后，可以依據這個容器創建本地鏡像，并可把這個鏡像推送到Docker hub中，以便在網絡上下載使用。
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查看鏡像[root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB 創建一個名為myubuntu的容器[root@docker-test1 ~]# docker run -ti --name myubuntu -d docker.io/ubuntu[root@docker-test1 ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES651a8541a47d docker.io/ubuntu "/bin/bash" 37 seconds ago Up 36 seconds myubuntu docker commit :從容器創建一個新的鏡像。# docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]-a :提交的鏡像作者；-c :使用Dockerfile指令來創建鏡像；-m :提交時的說明文字；-p :在commit時，將容器暫停。 根據這個myubuntu容器提交鏡像[root@docker-test1 ~]# docker commit -a "wangshibo" -m "this is test" 651a8541a47d myubuntu:v1sha256:6ce4aedd12cda693d0bbb857cc443a56f9f569106e09ec61aa53563d0932ea4d 再次查看鏡像,發現鏡像myubuntu:v1已經提交到本地了[root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEmyubuntu v1 6ce4aedd12cd 59 seconds ago 84.1 MBdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB 在mybuntu:v1鏡像推送到docker hub倉庫中去# docker push [OPTIONS] NAME[:TAG]OPTIONS說明：--disable-content-trust :忽略鏡像的校驗,默認開啟 首先是登錄docker hub （用戶名：wangshibo 密碼:*******）[root@docker-test1 ~]# docker loginLogin 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 (wangshibo): wangshiboPassword:Login Succeeded [root@docker-test1 ~]# docker push wangshibo/myubuntu:v1The push refers to a repository [docker.io/wangshibo/myubuntu]An image does not exist locally with the tag: docker.io/wangshibo/myubuntu 這里需要將ubuntu:v1鏡像改名，在名稱前加上自己的docker hub的Docker ID，即wangshibo [root@docker-test1 ~]# docker tag 6ce4aedd12cd wangshibo/myubuntu:v1[root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEmyubuntu v1 6ce4aedd12cd 6 minutes ago 84.1 MBwangshibo/myubuntu v1 6ce4aedd12cd 6 minutes ago 84.1 MBdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB 再次進行推送（注意：下面的v1的tag標簽可以不打，默認是latest）。推送操作時間稍微會有一點長，耐心等待～[root@docker-test1 ~]# docker push wangshibo/myubuntu:v1 The push refers to a repository [docker.io/wangshibo/myubuntu]b5948ba9486d: Pushed8d7ea83e3c62: Mounted from library/ubuntu6a061ee02432: Mounted from library/ubuntuf73b2816c52a: Mounted from library/ubuntu6267b420796f: Mounted from library/ubuntua30b835850bf: Mounted from library/ubuntuv1: digest: sha256:e9cd9075d262848a307c92751e1a5890d883b814a31abd118161442461a1ca2d size: 1564 最后登錄自己的Docker Hub，即https://hub.docker.com/登錄后，在Repositories里面就可以看到自己在上面推送的鏡像wangshibo/myubuntu:v1了，這是個對外的鏡像，可以在網絡上下載。在Docker hub上可以看到這個鏡像的下載命令（注意下載時跟上tag標簽，如果是latest的默認tag可以不跟）也可以直接在Docker hub上刪除這個鏡像（Repositories-鏡像-Settings-delete） 比如在另一臺服務器上下載這個鏡像[root@kevin-test ~]# docker pull wangshibo/myubuntuPulling repository wangshibo/myubuntuRepository not found 需要跟上tag標簽[root@kevin-test ~]# docker pull wangshibo/myubuntu:v1v1: Pulling from wangshibo/myubuntu68e2a091ef24: Pull complete8f9dd35f6299: Pull completea81a6171600b: Pull completea211a2bc7010: Pull complete9e71a0b4f83a: Pull complete0cf75bb335aa: Pull completec393a882769e: Pull completeDigest: sha256:845fa3dcc9d0de1b9c701e1009918995da35a29012015f6c297a05edc489e018Status: Downloaded newer image for wangshibo/myubuntu:v1[root@kevin-test ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZEwangshibo/myubuntu v1 c393a882769e 12 minutes ago 84.11 MB 在本機刪除這個鏡像[root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEmyubuntu v1 6ce4aedd12cd 15 minutes ago 84.1 MBwangshibo/myubuntu v1 6ce4aedd12cd 15 minutes ago 84.1 MBdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB 注意上面有兩個6ce4aedd12cd的鏡像ID，此時直接使用這個鏡像ID是刪除不掉的[root@docker-test1 ~]# docker rmi 6ce4aedd12cdError response from daemon: conflict: unable to delete 6ce4aedd12cd (must be forced) - image is referenced in multiple repositories 應該先刪除docker tag改名前的鏡像，使用鏡像名稱刪除。（一般在docker tag鏡像改名后，最好刪除改名前的鏡像）[root@docker-test1 ~]# docker rmi myubuntu:v1Untagged: myubuntu:v1Untagged: wangshibo/myubuntu@sha256:e9cd9075d262848a307c92751e1a5890d883b814a31abd118161442461a1ca2d [root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEwangshibo/myubuntu v1 6ce4aedd12cd 15 minutes ago 84.1 MBdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB 這個時候就可以刪除鏡像ID刪除了[root@docker-test1 ~]# docker rmi 6ce4aedd12cdUntagged: wangshibo/myubuntu:v1Deleted: sha256:6ce4aedd12cda693d0bbb857cc443a56f9f569106e09ec61aa53563d0932ea4dDeleted: sha256:0ddeb6a16badd042914c2e72b9ef0331550c1cdcc4bdc6650a90cd9f57f1501b[root@docker-test1 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZEdocker.io/ubuntu 16.04 7aa3602ab41e 5 weeks ago 115 MB |
刪除鏡像失敗一例分享
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[root@docker-test1 ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES[root@docker-test1 ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 打算刪除掉docker的nginx鏡像, 但是發現這個鏡像就是刪除不了，加了-f強制刪除也不行，一直報Error: No such image的錯誤，最后終于找到了辦法直接刪除文件! [root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEnginx latest 62f816a209e6 7 days ago 109MB [root@docker-test1 ~]# docker rmi nginxError: No such image: nginx [root@docker-test1 ~]# docker rmi 62f816a209e6Error: No such image: 62f816a209e6 [root@docker-test1 ~]# docker rmi 62f816a209e6 -fError: No such image: 62f816a209e6 如上,怎么都刪除不掉nginx鏡像!!!!! 處理辦法:[root@docker-test1 ~]# systemctl stop docker[root@docker-test1 ~]# rm -rf /var/lib/dockerrm: cannot remove ‘/var/lib/docker/containers': Device or resource busy 刪除不了的原因是: 在建立容器的時候做了相應目錄的掛載，沒有卸載，所以Device or resource busy 解決辦法: 查找掛載的目錄并卸載[root@docker-test1 ~]# cat /proc/mounts | grep "docker"/dev/mapper/centos-root /var/lib/docker/containers xfs rw,relatime,attr2,inode64,noquota 0 0proc /run/docker/netns/default proc rw,nosuid,nodev,noexec,relatime 0 0proc /run/docker/netns/a0626c54fd03 proc rw,nosuid,nodev,noexec,relatime 0 0proc /run/docker/netns/b18072de4224 proc rw,nosuid,nodev,noexec,relatime 0 0proc /run/docker/netns/b5298f643455 proc rw,nosuid,nodev,noexec,relatime 0 0proc /run/docker/netns/9f5e97637c98 proc rw,nosuid,nodev,noexec,relatime 0 0 [root@docker-test1 ~]# umount /var/lib/docker/containers[root@docker-test1 ~]# rm -rf /var/lib/docker [root@docker-test1 ~]# systemctl start docker 再次查看就沒有這個鏡像了[root@docker-test1 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE |
以上就是通過容器提交鏡像DockerCommit及推送鏡像DockerPush的詳細內容，更多關于容器提交及推送鏡像的資料請關注服務器之家其它相關文章！
原文鏈接：https://www.cnblogs.com/kevingrace/p/9599988.html
