①将一个容器卷挂载到nginx容器的配置文件目录②查看这个容器卷在宿主机磁盘上的位置③所看到的位置就是nginx容器配置文件目录
容器组配置文件：
[root@node1 docker-compose]# cat docker-compose.yml version: "2" services: nginx: image: nginx:latest ports: - "8181:80" volumes: - nginx-conf:/etc/nginx/ volumes: nginx-conf: driver: ${volume_driver}(这个是空的字符串-_-，默认为local)启动容器组：
[root@node1 docker-compose]# docker-compose up WARNING: The volume_driver variable is not set. Defaulting to a blank string. Creating volume "dockercompose_nginx-conf" with default driver Creating dockercompose_nginx_1 Attaching to dockercompose_nginx_1查看容器卷位置：
[root@node1 docker-compose]# docker volume ls DRIVER VOLUME NAME local 647231651fc20c125a99a435afdf6756b26493fbaa688d34456e37da416a6660 local dockercompose_nginx-conf [root@node1 docker-compose]# docker volume inspect dockercompose_nginx-conf [ { "Name": "dockercompose_nginx-conf", "Driver": "local", "Mountpoint": "/var/lib/docker/volumes/dockercompose_nginx-conf/_data", "Labels": null, "Scope": "local" } ]可以在这里直接修改nginx的配置文件：
[root@node1 docker-compose]# ll /var/lib/docker/volumes/dockercompose_nginx-conf/_data total 36 drwxr-xr-x 2 root root 25 Dec 26 2017 conf.d -rw-r--r-- 1 root root 1007 Dec 26 2017 fastcgi_params -rw-r--r-- 1 root root 2837 Dec 26 2017 koi-utf -rw-r--r-- 1 root root 2223 Dec 26 2017 koi-win -rw-r--r-- 1 root root 5170 Dec 26 2017 mime.types lrwxrwxrwx 1 root root 22 Dec 26 2017 modules -> /usr/lib/nginx/modules（此处闪烁，链接断开！？） -rw-r--r-- 1 root root 643 Dec 26 2017 nginx.conf -rw-r--r-- 1 root root 636 Dec 26 2017 scgi_params -rw-r--r-- 1 root root 664 Dec 26 2017 uwsgi_params -rw-r--r-- 1 root root 3610 Dec 26 2017 win-utf重启容器组生效配置：另外开一个终端
[root@node1 docker-compose]# docker-compose restart附driver值的属性：
- variable: "volume_driver" description: "Volume driver to associate with this service" label: "Volume Driver" required: true default: "local" type: enum options: # List of options if using type of `enum` #（driver值列表） - local - rancher-nfs - rancher-efs - rancher-ebs