[docker] docker private warehouse

1. Description

• 1.Docker's official docker hub (https://hub.docker.com) is a warehouse for managing public images. You can pull images from it to the local, or you can push your own images to it.
• 2. If the server cannot access the Internet, or if you do not want to put your own image on the public network, you need to build your own private warehouse to store and manage your own image

2. Construction of private warehouse

• 1. Pull the private warehouse image

docker pull registry

• 2. Start the private warehouse container

docker run -id --name=registry -p 5000:5000 registry

• 3. Browser access

#访问地址：http://私有仓库服务器ip:5000/v2/_catalog
#看到{"repositories":[]}表示私有仓库搭建成功

• 4. Modify daemon.json

vim /etc/docker/daemon.json

# 在上述文件中添加一个key，保存退出。用于让docker信任私有仓库地址；
# 注意将私有仓库服务器ip修改为自己私有仓库服务器真实ip
{“insecure-registries”: ["私有仓库服务器ip:5000"]}

• 5. Restart the docker service

systemctl restart docker
docker start registry

3. Upload the image to the private warehouse

• 1. Mark the mirror as a mirror of a private warehouse

docker tag centos:7 私有仓库服务器ip:5000/centos:7

• 2. Upload the marked image

docker push 私有仓库服务器ip:5000/centos:7

4. Pull the image from the private warehouse

• 1. Pull the image

docker pull 私有仓库服务器ip:5000/centos:7