docker-compose.yml

# Runs the app together with a MongoDB database. Either with the image that CI publishes for every version tag:
#   docker compose pull && docker compose up -d
# or built from this checkout:
#   docker compose up -d --build
# The app is then available on http://localhost:8080 (or APP_PORT). Settings can be put into a .env file next to
# this file, see .env.example.

services:
  app:
    image: ghcr.io/j4velin/contractsmanagementsystem:${APP_VERSION:-latest}
    build: .
    restart: unless-stopped
    depends_on:
      mongo:
        condition: service_healthy
    ports:
      - "${APP_PORT:-8080}:8080"
    environment:
      SPRING_MONGODB_URI: mongodb://mongo:27017/contracts
      # creates the unique index on the username
      SPRING_DATA_MONGODB_AUTO_INDEX_CREATION: "true"
      # contracts.remember-me.key; if empty, remembered logins don't survive a restart of the app
      CONTRACTS_REMEMBERME_KEY: ${REMEMBER_ME_KEY:-}
      # behind a reverse proxy: use its X-Forwarded-* headers, so redirects keep https and the public host
      SERVER_FORWARD_HEADERS_STRATEGY: ${FORWARD_HEADERS_STRATEGY:-native}
      # time zone of the app: decides which contracts are active today and the cancel-by dates
      TZ: ${TIMEZONE:-Europe/Berlin}
      # maximum Java heap: plenty for a few users, and small enough for a server with 2 GB of RAM
      JAVA_TOOL_OPTIONS: -Xmx${APP_MAX_HEAP:-256m}

  mongo:
    image: mongo:8.0
    restart: unless-stopped
    # MongoDB reserves about half of the RAM for its cache by default, far more than this app needs
    command: ["--wiredTigerCacheSizeGB", "${MONGO_CACHE_GB:-0.25}"]
    # not published to the host: only the app can reach the database
    volumes:
      - mongo-data:/data/db
    healthcheck:
      test: ["CMD", "mongosh", "--quiet", "--eval", "db.adminCommand('ping').ok"]
      interval: 5s
      timeout: 5s
      retries: 20
      start_period: 10s

volumes:
  mongo-data: