命名卷备份还原

备份命令示例：
docker run --rm -v my_volume:/data -v $(pwd):/backup alpine tar czf /backup/backup.tar.gz -C /data .
# 恢复命令示例
docker run --rm -v my_volume:/data -v $(pwd):/backup alpine tar xzf /backup/backup.tar.gz -C /data

修改数据卷
方法一：使用临时容器进入命令行（最推荐）

# -i: 交互式
# -t: 分配终端
# --rm: 退出后自动删除容器
# -v: 把卷挂载到容器的 /work 目录
docker run -it --rm -v my_app_config:/data alpine sh

方法二：从宿主机“覆盖”文件（适合本地改好再上传）

# 语法：docker run --rm -v <卷名>:<目标路径> -v <宿主机路径>:<源路径> <镜像> cp <源文件> <目标文件>

# 示例：把宿主机的新配置覆盖到卷里
docker run --rm \
  -v my_app_config:/target \
  -v $(pwd):/source \
  alpine cp /source/new_config.json /target/config.json

命名卷使用方法

#version: "3"
services:

  proxy:
    image: nginxproxy/nginx-proxy
    container_name: nginx-proxy
    restart: always
    ports:
      - 80:80
      - 443:443
    labels:
      com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
    volumes:
      - ./nginx-proxy/certs:/etc/nginx/certs:ro
      - ./nginx-proxy/config/nginx/conf.d:/etc/nginx/conf.d
      - ./nginx-proxy/acme:/acmecerts
      - ./nginx-proxy/vhost.d:/etc/nginx/vhost.d
      - ./nginx-proxy/html:/usr/share/nginx/html
      - /var/run/docker.sock:/tmp/docker.sock:ro
    networks:
      - default
      
  letsencrypt-companion:
    image: jrcs/letsencrypt-nginx-proxy-companion
    container_name: letsencrypt
    volumes:
      - ./nginx-proxy/certs:/etc/nginx/certs
      - ./nginx-proxy/vhost.d:/etc/nginx/vhost.d
      - ./nginx-proxy/html:/usr/share/nginx/html
      - /var/run/docker.sock:/var/run/docker.sock:ro
    depends_on:
      - proxy
    restart: always
    networks:
      - default


  dwz:
    image: registry-vpc.cn-hangzhou.aliyuncs.com/shiningrise/dwz:2.1.0
    container_name: dwz
    privileged: true
    restart: always
    tty: true
    environment:
    - TZ=Asia/Shanghai
    - VIRTUAL_HOST=dwz.wxy.kim
    - VIRTUAL_PORT=5000
    - LETSENCRYPT_HOST=dwz.wxy.kim
    - LETSENCRYPT_EMAIL=shiningrise@qq.com
    volumes:
    #- ./dwz/instance:/app/instance
    - dwz_data_volume:/app/instance

    
    
volumes:
  dwz_data_volume:
    name: dwz_data