swarm 使用 local volume

本节源码，两个文件

docker-compose.yml

version: "3.8"

services:
  db:
    image: mysql:5.7
    environment:
      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/mysql_pass
    secrets:
      - mysql_pass
    volumes:
      - data:/var/lib/mysql

volumes:
  data:

secrets:
  mysql_pass:
    file: mysql_pass.txt

mysql_pass.txt

vagrant@swarm-manager:~$ more mysql_pass.txt
abc123
vagrant@swarm-manager:~$