デジタル盆栽（自宅鯖）

utf8mb4じゃないのが原因ぽい
どこで拾ってきたのか忘れたけど，ご丁寧にdokcer-compose.ymlにutf8って書いてある...

version: '3.1'

services:

  redmine:
    image: redmine
    restart: always
    ports:
      - 8080:3000
    environment:
      REDMINE_DB_MYSQL: db
      REDMINE_DB_PASSWORD: redmine
      REDMINE_SECRET_KEY_BASE: supersecretkey
    volumes:
      - ./files:/usr/src/redmine/files
      - ./plugins:/usr/src/redmine/plugins
      - ./themes:/usr/src/redmine/public/themes

  db:
    image: mysql:5.7
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: redmine
      MYSQL_DATABASE: redmine
    volumes:
     - ./db:/var/lib/mysql
    command: mysqld --character-set-server=utf8 --collation-server=utf8_unicode_ci

ところで mysql に入れませんが...

# mysql -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)