Docker本地镜像推送到自建私有仓库

搭建私有仓库

搭建仓库采用Docker官方的 registry 镜像。

官方文档：https://docs.docker.com/registry/

1. 下载镜像

docker pull registry

2. 运行容器

docker run -d -p 5000:5000  -v /data/myregistry/:/tmp/registry --privileged=true registry

3. 查看私服

查看当前私服有哪些镜像

[root@localhost ~]# curl -XGET http://192.168.92.146:5000/v2/_catalog
{"repositories":[]}

当前没有。

构建本地镜像

基于ubuntu镜像，添加ifconfig命令。

[root@localhost ~]# docker run -it ubuntu /bin/bash
root@4c19d8b129bd:/# apt-get update
root@4c19d8b129bd:/# apt-get install -y net-tools   # 添加 ifconfig 命令

Ctrl+p+q 退出。

使用commit提交新的镜像：

[root@localhost ~]# docker ps -a
CONTAINER ID   IMAGE      COMMAND                  CREATED         STATUS         PORTS                                       NAMES
4c19d8b129bd   ubuntu     "/bin/bash"              3 minutes ago   Up 3 minutes                                               distracted_raman
29c9e97c1edc   registry   "/entrypoint.sh /etc…"   4 minutes ago   Up 4 minutes   0.0.0.0:5000->5000/tcp, :::5000->5000/tcp   intelligent_fermi

[root@localhost ~]# docker commit -m="Add ifconfig command" -a="Alex" 4c19d8b129bd alex/ubuntu:v1.2
sha256:5ae571578dc43d97fdef4435c057149749dbb8ae4034a84fbb5e2c5a7b0db752

[root@localhost ~]# docker images
REPOSITORY                                        TAG       IMAGE ID       CREATED             SIZE
alex/ubuntu                                       v1.2      5ae571578dc4   4 seconds ago       108MB
registry.cn-beijing.aliyuncs.com/chenxie/ubuntu   v1.0      80e71251231c   About an hour ago   175MB
registry                                          latest    b8604a3fe854   3 months ago        26.2MB
ubuntu                                            latest    ba6acccedd29   4 months ago        72.8MB

推送到私服

打Tag

将 alex/ubuntu:v1.2 重新打为符合私服规范的Tag：

[root@localhost ~]# docker tag alex/ubuntu:v1.2 192.168.92.146:5000/alex/ubuntu:v1.2
[root@localhost ~]# docker images
REPOSITORY                                        TAG       IMAGE ID       CREATED             SIZE
192.168.92.145:5000/alex/ubuntu                   v1.2      5ae571578dc4   8 minutes ago       108MB
alex/ubuntu                                       v1.2      5ae571578dc4   8 minutes ago       108MB

修改配置文件使之支持http推送

修改配置文件使之支持http推送，不然会报：Get "https://192.168.92.146:5000/v2/": http: server gave HTTP response to HTTPS client

vim /etc/docker/daemon.json

改为如下：

{
  "registry-mirrors": ["https://cvy84kji.mirror.aliyuncs.com"],
  "insecure-registries": ["192.168.92.146:5000"]
}

注意：不要忘记加逗号。

重新加载docker配置：systemctl reload docker

推送

[root@localhost ~]# docker push 192.168.92.146:5000/alex/ubuntu:v1.2
The push refers to repository [192.168.92.146:5000/alex/ubuntu]
1ca6a59fa47a: Pushed 
9f54eef41275: Pushed 
v1.2: digest: sha256:507180f5b6dfc2455c15a359bf295d1ab680e8397624c8f9628199142c129a7f size: 741

再次查看私服：

[root@localhost ~]# curl -XGET http://192.168.92.146:5000/v2/_catalog
{"repositories":["alex/ubuntu"]}

有了新的镜像。

拉取测试

[root@localhost ~]# docker pull 192.168.92.146:5000/alex/ubuntu:v1.2
v1.2: Pulling from alex/ubuntu
7b1a6ab2e44d: Already exists 
8b0fe7c91193: Already exists 
Digest: sha256:507180f5b6dfc2455c15a359bf295d1ab680e8397624c8f9628199142c129a7f
Status: Downloaded newer image for 192.168.92.145:5000/alex/ubuntu:v1.2
192.168.92.145:5000/alex/ubuntu:v1.2
[root@localhost ~]# 
[root@localhost ~]# docker images
REPOSITORY                        TAG       IMAGE ID       CREATED          SIZE
192.168.92.145:5000/alex/ubuntu   v1.2      5ae571578dc4   22 minutes ago   108MB