搭建一个docker镜像仓库,缓存镜像请求

创建软件目录

mkdir -p registry
cd $_

docker构建脚本

services:
    registry:
        ports:
            - 5000:5000
        restart: always
        container_name: registry-cache
        volumes:
            - ./data:/var/lib/registry
            - ./config.yml:/etc/distribution/config.yml
        image: registry

配置文件

version: 0.1
proxy:
  remoteurl: https://registry-1.docker.io
  ttl: 0
storage:
  cache:
    blobdescriptor: inmemory
  filesystem:
    rootdirectory: /var/lib/registry
  tag:
    concurrencylimit: 8
http:
  addr: :5000
  headers:
    X-Content-Type-Options: [nosniff]
health:
  storagedriver:
    enabled: true
    interval: 10s
    threshold: 3

启动

docker-compose up -d
docker-compose ps

1.小技巧，使用term

1.1 添加下行隧道 1.2 转发服务端docker套接字到本地 以下命令均在term端执行

ssh -L 5555:/var/run/docker.sock -N localhost

1.3 权限及账号准备

chmod 777 /var/run/docker.sock
useradd sync
usermod -s /bin/bash sync
echo "sync:sync" | chpasswd
apt install -y sudo

切换用户

cat > /etc/sudoers.d/sync << 'EOF'
sync ALL=(ALL) NOPASSWD: ALL
EOF
su - sync

1.4 同步镜像

export DOCKER_HOST=tcp://localhost:5555
# 本地到服务器
sudo docker save openjdk:11-jdk-slim |  docker load

# 服务器到本地
docker save openjdk:11-jdk-slim | sudo docker load