docker提交以及命名空间
[toc]
commit
**docker commit **：从容器创建一个新的镜像。
语法
docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
OPTIONS说明：
-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。
实例 – 在Ubuntu中安装vim
docker exec -it abce9bcaf87c /bin/bash
apt-get update
apt-get install -y vim
此时可以使用vim命令了
此时我们可以理解分层的好处了，就是共享资源，方便复制迁移，就是为了复用
多个镜像都从相同的镜像base镜像架构而来，那么docker host只需要在磁盘上保存一份base镜像，而且内存中每一层镜像都可以被共享。
docker commit -m="vim cmd add ok" -a="nsddd" 08d1e4ac02f2 smile/myubuntu：版本号
docker中镜像分层，支持通过扩展现有镜像，创建新的镜像，类似于java继承与一个base基础类，自己再按需扩展，新的镜像就是从base镜像一层层的叠加生成的，每安装一个软件，就在现有的镜像的基础上增加一层镜像。
将容器a404c6c174a2 保存为新的镜像,并添加提交人信息和说明信息。
runoob@runoob:~$ docker commit -a "runoob.com" -m "my apache" a404c6c174a2 mymysql:v1
sha256:37af1236adef1544e8886be23010b66577647a40bc02c0885a6600b33ee28057
runoob@runoob:~$ docker images mymysql:v1
REPOSITORY TAG IMAGE ID CREATED SIZE
mymysql v1 37af1236adef 15 seconds ago 329 MB
命名空间
因为如果我们使用hub.docker 的话可能访问太慢了。所以选择hub可能不是很明治的选择，所以使用aliyun是一个很好的选择。
添加个人仓库
注意欸，要在下面的访问凭证设置密码
完整的阿里云推送和拉取过程
关键过程
docker ps
docker commit -m="vim cmd add ok" -a="nsddd" 08d1e4ac02f2 smile/myubuntu
docker images
docker login --username=3293172751nss registry.cn-hangzhou.aliyuncs.com
docker tag 6962da3091d1 registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
docker push registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
docker rmi -f 6962da3091d1
docker images
docker rmi -f ba6acccedd29 4b9109b3e917 c717164f2c33 717164f2c33
docker pull registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
docker images
全过程
root@ubuntu:/# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
08d1e4ac02f2 ubuntu "bash" 18 minutes ago Up 18 minutes cranky_babbage
a22dd4f7caf4 redis "docker-entrypoint.s…" 24 hours ago Up 24 hours 6379/tcp strange_elgamal
root@ubuntu:/# ls
bin c chain docker home lib lib64 lost+found mnt opt proc run snap swapfile tmp var
boot cdrom dev etc hyerledgerFabric lib32 libx32 media nginx pbft root sbin srv sys usr vpn
root@ubuntu:/# docker commit -m="vim cmd add ok" -a="nsddd" 08d1e4ac02f2 smile/myubuntu
sha256:6962da3091d10456d52b8771f35d94dc01520e1ec661103438c77d6bb87d5d6f
root@ubuntu:/# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
smile/myubuntu latest 6962da3091d1 20 seconds ago 108MB
smile/ubuntu 3.7 4b9109b3e917 23 hours ago 0B
<none> <none> c717164f2c33 23 hours ago 0B
smile/ubuntu 1 ebc64f915192 23 hours ago 0B
tomcat latest fb5657adc892 4 months ago 680MB
redis latest 7614ae9453d1 4 months ago 113MB
python latest a5d7930b60cc 4 months ago 917MB
ubuntu latest ba6acccedd29 6 months ago 72.8MB
root@ubuntu:/# docker login --username=3293172751nss registry.cn-hangzhou.aliyuncs.com
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
root@ubuntu:/# docker tag 6962da3091d1 registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
root@ubuntu:/# docker push registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
Using default tag: latest
The push refers to repository [registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu]
57fc73d61f9a: Pushed
9f54eef41275: Pushed latest: digest: sha256:08bb12c0c5d3a3449c3b1e06381a2eb9e3e43bc252237b4ba5e79f917adbcd6b size: 741
root@ubuntu:/# docker rmi -f 6962da3091d1
Untagged: smile/myubuntu:latest
Untagged: registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu:latest
Untagged: registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu@sha256:08bb12c0c5d3a3449c3b1e06381a2eb9e3e43bc252237b4ba5e79f917adbcd6b
Deleted: sha256:6962da3091d10456d52b8771f35d94dc01520e1ec661103438c77d6bb87d5d6f
Deleted: sha256:d442f4d51ca04c56cec20bc9dfda5e7ceb7e227145fe7cbfe89fafd36e022fc0
root@ubuntu:/# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
smile/ubuntu 3.7 4b9109b3e917 24 hours ago 0B
<none> <none> c717164f2c33 24 hours ago 0B
smile/ubuntu 1 ebc64f915192 24 hours ago 0B
tomcat latest fb5657adc892 4 months ago 680MB
redis latest 7614ae9453d1 4 months ago 113MB
python latest a5d7930b60cc 4 months ago 917MB
ubuntu latest ba6acccedd29 6 months ago 72.8MB
root@ubuntu:/# docker rmi -f ba6acccedd29 4b9109b3e917 c717164f2c33 717164f2c33
Untagged: smile/ubuntu:3.7
Deleted: sha256:4b9109b3e9172fbbfc797578772925f78bcb0007cf9c5204ee9e3820075284c2
Deleted: sha256:c717164f2c33d6edea7055110293bb2f65c1bb5ba97b5a43b9c9202d312b5942
Error response from daemon: conflict: unable to delete ba6acccedd29 (cannot be forced) - image is being used by running container 08d1e4ac02f2
Error: No such image: 717164f2c33
root@ubuntu:/# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
smile/ubuntu 1 ebc64f915192 24 hours ago 0B
tomcat latest fb5657adc892 4 months ago 680MB
redis latest 7614ae9453d1 4 months ago 113MB
python latest a5d7930b60cc 4 months ago 917MB
ubuntu latest ba6acccedd29 6 months ago 72.8MB
root@ubuntu:/# docker pull registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu
Using default tag: latest
latest: Pulling from nsddd/myubuntu
7b1a6ab2e44d: Already exists
bc5f4eb531d0: Pull complete
Digest: sha256:08bb12c0c5d3a3449c3b1e06381a2eb9e3e43bc252237b4ba5e79f917adbcd6b
Status: Downloaded newer image for registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu:latest
registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu:latest
root@ubuntu:/# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.cn-hangzhou.aliyuncs.com/nsddd/myubuntu latest 6962da3091d1 12 minutes ago 108MB
smile/ubuntu 1 ebc64f915192 24 hours ago 0B
tomcat latest fb5657adc892 4 months ago 680MB
redis latest 7614ae9453d1 4 months ago 113MB
python latest a5d7930b60cc 4 months ago 917MB
ubuntu latest ba6acccedd29 6 months ago 72.8MB