Docker compose.yaml file for Domjudge

compose.yaml

# Domjudge compose.yaml. To run:
# First add the following to /etc/default/grub's GRUB_CMDLINE_LINUX_DEFAULT section:
# cgroup_enable=memory swapaccount=1 systemd.unified_cgroup_hierarchy=0
# $ head /dev/urandom | tr -dc A-Za-z0-9 | head -c 13 > db_password.txt
# $ head /dev/urandom | tr -dc A-Za-z0-9 | head -c 13 > db_root_password.txt
# $ docker compose up
# Note that judgehosts will not work the first time you run 'docker compose up'. After initial setup is completed it will print the following in logs:
  # domjudge-1   | Initial admin password is mmBEWPj2VYWYiW_v
  # domjudge-1   |
  # domjudge-1   | Initial judgehost password is uBCdPeZFf+N2LBqylYVpMvaFBoaXTsdC
# Copy this password and put it in judgehost_password.txt. Example:
  # echo "uBCdPeZF..." > judgehost_password.txt
# Run docker compose again:
# $ docker compose up
# To create more judgehost instances, copy paste the judgehost section and increment DAEMON_ID
services:
  mysql:
    image: mysql:latest
    ports:
      - 13306:3306
    environment:
      MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db_root_password
      MYSQL_DATABASE: domjudge
      MYSQL_USER: domjudge
      MYSQL_PASSWORD_FILE: /run/secrets/db_password
    volumes:
      - db_data:/var/lib/mysql
    secrets:
      - db_root_password
      - db_password
  domjudge:
    depends_on:
      - mysql
    image: domjudge/domserver:latest
    volumes:
      - domjudge_data:/opt/domjudge/
    ports:
      - 80:80
    environment:
      MYSQL_USER: domjudge
      MYSQL_PASSWORD_FILE: /run/secrets/db_password
      MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db_root_password
      MYSQL_HOST: mysql
      MYSQL_DATABASE: domjudge
    secrets:
      - db_password
      - db_root_password
      - judgehost_password
  judgehost:
    privileged: true
    restart: always
    volumes:
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    depends_on:
      - domjudge
    image: domjudge/judgehost:latest
    environment:
      DAEMON_ID: 0
      DOMSERVER_BASEURL: http://domjudge/
      JUDGEDAEMON_PASSWORD_FILE: /run/secrets/judgehost_password
    secrets:
      - judgehost_password

secrets:
  db_password:
    file: db_password.txt
  db_root_password:
    file: db_root_password.txt
  # Judgehost password. When starting using 'docker compose up' for the first time, you will have to copy the judgedaemon/judgehost password from there and put it into judgehost_password.txt
  # I'm not aware of a way to automate this, might be possible by modifying domjudge Docker.yml 
  judgehost_password:
    file: judgehost_password.txt

volumes:
  db_data:
  domjudge_data: