概述

随着docker的应用越来越多，安装部署越来越方便，批量自动化的镜像生成和发布都需要docker仓库的本地化应用。

试用了docker的本地仓库功能，简单易上手，记录下来以备后用。

环境

centos：CentOS release 7.0 (Final)或以上版本

Docker version 24.0.6, build ed223bc

下载registry镜像

从官方下载registry镜像和debian镜像。

sudo docker pull registry

sudo docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

registry latest 0ae1560ca86f 8 days ago 25.4MB

debian bullseye 909f4919a453 3 weeks ago 124MB

启动registry容器

使用默认5000端口映射registry容器。

sudo docker run -d -p 5000:5000 --restart=always --name registry registry:latest

查看启动情况。

sudo docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

3795a6fcd7e7 registry:latest "/entrypoint.sh /etc…" 4 hours ago Up 4 hours 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp registry

打开registry的web页面，注意要用http不带s。

http://10.55.55.136:5000/v2/_catalog

{"repositories":["test/debian"]}

docker客户端配置

修改docker客户端配置，没有则创建。

sudo vi /etc/docker/daemon.json

{

"insecure-registries":[

"10.55.55.136:5000",

"localhost:5000"

]

}

重启docker。

sudo systemctl restart docker

上传镜像到registry

查看当前镜像，有debian的bulleye版本。

sudo docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

registry latest 0ae1560ca86f 8 days ago 25.4MB

debian bullseye 909f4919a453 3 weeks ago 124MB

对debian:bullseye打tag。

sudo docker tag debian:bullseye 10.55.55.136:5000/test/debian:v1.0

sudo docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

registry latest 0ae1560ca86f 9 days ago 25.4MB

10.55.55.136:5000/test/debian v1.0 909f4919a453 3 weeks ago 124MB

debian bullseye 909f4919a453 3 weeks ago 124MB

上传自定义镜像。

sudo docker push 10.55.55.136:5000/test/debian:v1.0

push时如果产生下面的报错，返回上一步，修改docker客户端配置解决。

The push refers to repository [10.55.55.136:5000/test/debian]

Get "https://10.55.55.136:5000/v2/": http: server gave HTTP response to HTTPS client

下载自定义镜像

首先删除本地自定义镜像，然后从registry重新下载。

sudo docker rmi 10.55.55.136:5000/test/debian:v1.0

sudo docker pull 10.55.55.136:5000/test/debian:v1.0

sudo docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

registry latest 0ae1560ca86f 8 days ago 25.4MB

10.55.55.136:5000/test/debian v1.0 909f4919a453 3 weeks ago 124MB

debian bullseye 909f4919a453 3 weeks ago 124MB

总结

Docker镜像的本地库是CI自动化流程的必要步骤。

Docker的registry镜像简单易上手。

空空如常

求真得真