docker-compose/radicale/docker-compose.yml

services:
  radicale:
    image: docker.io/tomsquest/docker-radicale:3.5.4.0
    container_name: radicale
    init: true
    read_only: true
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL
    cap_add:
      - SETUID
      - SETGID
      - CHOWN
      - KILL
    deploy:
      resources:
        limits:
          memory: 256M
          pids: 50
    volumes:
      - ${APPDATA_PATH}/radicale/data:/data
      - ${APPDATA_PATH}/radicale/config:/config:ro
    ports:
      - ${PORT}:5232
    networks:
      - frontend
    restart: unless-stopped
    healthcheck:
      test: curl -f http://127.0.0.1:5232 || exit 1
      interval: 30s
      retries: 3

networks:
  frontend:
    external: true