通过容器提交镜像DockerCommit及推送镜像DockerPush

 查看镜像 [root@docker-test1 ~]# docker images REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE docker.io/ubuntu    16.04               7aa3602ab41e        5 weeks ago         115 MB 创建一个名为myubuntu的容器 [root@docker-test1 ~]# docker run -ti --name myubuntu -d docker.io/ubuntu [root@docker-test1 ~]# docker ps CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES 651a8541a47d        docker.io/ubuntu    "/bin/bash"         37 seconds ago      Up 36 seconds                           myubuntu docker commit :从容器创建一个新的镜像。 # docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]] -a :提交的镜像作者； -c :使用Dockerfile指令来创建镜像； -m :提交时的说明文字； -p :在commit时，将容器暂停。 根据这个myubuntu容器提交镜像 [root@docker-test1 ~]# docker commit -a "wangshibo" -m "this is test" 651a8541a47d myubuntu:v1 sha256:6ce4aedd12cda693d0bbb857cc443a56f9f569106e09ec61aa53563d0932ea4d 再次查看镜像,发现镜像myubuntu:v1已经提交到本地了 [root@docker-test1 ~]# docker images REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE myubuntu            v1                  6ce4aedd12cd        59 seconds ago      84.1 MB docker.io/ubuntu    16.04               7aa3602ab41e        5 weeks ago         115 MB 在mybuntu:v1镜像推送到docker hub仓库中去 # docker push [OPTIONS] NAME[:TAG] OPTIONS说明： --disable-content-trust :忽略镜像的校验,默认开启 首先是登录docker hub （用户名：wangshibo    密码:*******） [root@docker-test1 ~]# 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 (wangshibo): wangshibo Password: Login Succeeded [root@docker-test1 ~]# docker push wangshibo/myubuntu:v1 The push refers to a repository [docker.io/wangshibo/myubuntu] An image does not exist locally with the tag: docker.io/wangshibo/myubuntu 这里需要将ubuntu:v1镜像改名，在名称前加上自己的docker hub的Docker ID，即wangshibo [root@docker-test1 ~]# docker tag 6ce4aedd12cd wangshibo/myubuntu:v1 [root@docker-test1 ~]# docker images REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE myubuntu             v1                  6ce4aedd12cd        6 minutes ago       84.1 MB wangshibo/myubuntu   v1                  6ce4aedd12cd        6 minutes ago       84.1 MB docker.io/ubuntu     16.04               7aa3602ab41e        5 weeks ago         115 MB 再次进行推送（注意：下面的v1的tag标签可以不打，默认是latest）。推送操作时间稍微会有一点长，耐心等待～ [root@docker-test1 ~]# docker push wangshibo/myubuntu:v1 The push refers to a repository [docker.io/wangshibo/myubuntu] b5948ba9486d: Pushed 8d7ea83e3c62: Mounted from library/ubuntu 6a061ee02432: Mounted from library/ubuntu f73b2816c52a: Mounted from library/ubuntu 6267b420796f: Mounted from library/ubuntu a30b835850bf: Mounted from library/ubuntu v1: digest: sha256:e9cd9075d262848a307c92751e1a5890d883b814a31abd118161442461a1ca2d size: 1564 最后登录自己的Docker Hub，即https://hub.docker.com/ 登录后，在Repositories里面就可以看到自己在上面推送的镜像wangshibo/myubuntu:v1了，这是个对外的镜像，可以在网络上下载。 在Docker hub上可以看到这个镜像的下载命令（注意下载时跟上tag标签，如果是latest的默认tag可以不跟） 也可以直接在Docker hub上删除这个镜像（Repositories-镜像-Settings-delete） 比如在另一台服务器上下载这个镜像 [root@kevin-test ~]# docker pull wangshibo/myubuntu Pulling repository wangshibo/myubuntu Repository not found 需要跟上tag标签 [root@kevin-test ~]# docker pull wangshibo/myubuntu:v1 v1: Pulling from wangshibo/myubuntu 68e2a091ef24: Pull complete 8f9dd35f6299: Pull complete a81a6171600b: Pull complete a211a2bc7010: Pull complete 9e71a0b4f83a: Pull complete 0cf75bb335aa: Pull complete c393a882769e: Pull complete Digest: sha256:845fa3dcc9d0de1b9c701e1009918995da35a29012015f6c297a05edc489e018 Status: Downloaded newer image for wangshibo/myubuntu:v1 [root@kevin-test ~]# docker  images REPOSITORY           TAG                 IMAGE ID            CREATED             VIRTUAL SIZE wangshibo/myubuntu   v1                  c393a882769e        12 minutes ago      84.11 MB 在本机删除这个镜像 [root@docker-test1 ~]# docker images REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE myubuntu             v1                  6ce4aedd12cd        15 minutes ago      84.1 MB wangshibo/myubuntu   v1                  6ce4aedd12cd        15 minutes ago      84.1 MB docker.io/ubuntu     16.04               7aa3602ab41e        5 weeks ago         115 MB 注意上面有两个6ce4aedd12cd的镜像ID，此时直接使用这个镜像ID是删除不掉的 [root@docker-test1 ~]# docker rmi 6ce4aedd12cd Error response from daemon: conflict: unable to delete 6ce4aedd12cd (must be forced) - image is referenced in multiple repositories 应该先删除docker tag改名前的镜像，使用镜像名称删除。（一般在docker tag镜像改名后，最好删除改名前的镜像） [root@docker-test1 ~]# docker rmi myubuntu:v1 Untagged: myubuntu:v1 Untagged: wangshibo/myubuntu@sha256:e9cd9075d262848a307c92751e1a5890d883b814a31abd118161442461a1ca2d [root@docker-test1 ~]# docker images REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE wangshibo/myubuntu   v1                  6ce4aedd12cd        15 minutes ago      84.1 MB docker.io/ubuntu     16.04               7aa3602ab41e        5 weeks ago         115 MB 这个时候就可以删除镜像ID删除了 [root@docker-test1 ~]# docker rmi 6ce4aedd12cd Untagged: wangshibo/myubuntu:v1 Deleted: sha256:6ce4aedd12cda693d0bbb857cc443a56f9f569106e09ec61aa53563d0932ea4d Deleted: sha256:0ddeb6a16badd042914c2e72b9ef0331550c1cdcc4bdc6650a90cd9f57f1501b [root@docker-test1 ~]# docker images REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE docker.io/ubuntu    16.04               7aa3602ab41e        5 weeks ago         115 MB

 [root@docker-test1 ~]# docker ps CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES [root@docker-test1 ~]# docker ps -a CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES 打算删除掉docker的nginx镜像, 但是发现这个镜像就是删除不了，加了-f强制删除也不行，一直报Error: No such image的错误， 最后终于找到了办法直接删除文件! [root@docker-test1 ~]# docker images REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE nginx               latest              62f816a209e6        7 days ago          109MB [root@docker-test1 ~]# docker rmi nginx Error: No such image: nginx [root@docker-test1 ~]# docker rmi 62f816a209e6 Error: No such image: 62f816a209e6 [root@docker-test1 ~]# docker rmi 62f816a209e6 -f Error: No such image: 62f816a209e6 如上,怎么都删除不掉nginx镜像!!!!! 处理办法: [root@docker-test1 ~]# systemctl stop docker [root@docker-test1 ~]# rm -rf /var/lib/docker rm: cannot remove ‘/var/lib/docker/containers': Device or resource busy 删除不了的原因是: 在建立容器的时候做了相应目录的挂载，没有卸载，所以Device or resource busy 解决办法: 查找挂载的目录并卸载 [root@docker-test1 ~]# cat /proc/mounts | grep "docker" /dev/mapper/centos-root /var/lib/docker/containers xfs rw,relatime,attr2,inode64,noquota 0 0 proc /run/docker/netns/default proc rw,nosuid,nodev,noexec,relatime 0 0 proc /run/docker/netns/a0626c54fd03 proc rw,nosuid,nodev,noexec,relatime 0 0 proc /run/docker/netns/b18072de4224 proc rw,nosuid,nodev,noexec,relatime 0 0 proc /run/docker/netns/b5298f643455 proc rw,nosuid,nodev,noexec,relatime 0 0 proc /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 再次查看就没有这个镜像了 [root@docker-test1 ~]# docker images REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE