docker-compose.yml

services:
  db:
    image: postgres:18-alpine
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD must be set}
      POSTGRES_DB: ${POSTGRES_DB:-sourcerer}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres}"]
      interval: 10s
      timeout: 5s
      retries: 5
    volumes:
      - postgres_data:/var/lib/postgresql
      # Mount the schema file to initialize the DB automatically
      - ./backend/schema.sql:/docker-entrypoint-initdb.d/init.sql:ro
    restart: unless-stopped
    deploy:
      resources:
        limits:
          memory: 1g

  # Builds the Kotlin extractor jar the backend shells out to. Opt-in so the
  # normal `up` path is fast:
  #   docker compose --profile build run --rm cli-build
  # The jar lands in ./cli/build/libs and is mounted read-only into backend.
  cli-build:
    image: gradle:4.10.3-jdk8
    profiles:
      - build
    working_dir: /home/gradle/project
    volumes:
      - ./cli:/home/gradle/project
      - gradle_cache:/home/gradle/.gradle
    # `assemble`, not `build`: the Spek test dependencies resolve from
    # dl.bintray.com, which is sunset, so compiling tests would fail. The
    # production jar itself has no such dependency.
    command: gradle --no-daemon assemble

  backend:
    build:
      # Root context so the image can bake in cli/build/libs/sourcerer-app.jar.
      # Run ./build_cli.sh first; .dockerignore keeps the context small.
      context: .
      dockerfile: backend/Dockerfile
    expose:
      - "8080"
    environment:
      - ENV=${ENV:-production}
      - DATABASE_URL=host=db user=${POSTGRES_USER:-postgres} password=${POSTGRES_PASSWORD} dbname=${POSTGRES_DB:-sourcerer} sslmode=disable
      - GITHUB_CLIENT_ID=${GITHUB_CLIENT_ID:?GITHUB_CLIENT_ID must be set}
      - GITHUB_CLIENT_SECRET=${GITHUB_CLIENT_SECRET:?GITHUB_CLIENT_SECRET must be set}
      - SESSION_SECRET=${SESSION_SECRET:?SESSION_SECRET must be set}
      - API_INTERNAL_TOKEN=${API_INTERNAL_TOKEN:?API_INTERNAL_TOKEN must be set}
      - PUBLIC_BASE_URL=${PUBLIC_BASE_URL:-}
      - CORS_ALLOWED_ORIGINS=${CORS_ALLOWED_ORIGINS:-}
    healthcheck:
      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://127.0.0.1:8080/healthz"]
      interval: 15s
      timeout: 5s
      retries: 3
      start_period: 20s
    depends_on:
      db:
        condition: service_healthy
    restart: unless-stopped
    deploy:
      resources:
        limits:
          # The JVM extractor runs inside this container; leave it headroom.
          memory: 2g

  proxy:
    image: nginx:1.27-alpine
    ports:
      - "80:80"
      - "443:443"
    environment:
      - SERVER_NAME=${SERVER_NAME:-_}
      - SSL_CERTIFICATE=${SSL_CERTIFICATE:-/etc/nginx/ssl/fullchain.pem}
      - SSL_CERTIFICATE_KEY=${SSL_CERTIFICATE_KEY:-/etc/nginx/ssl/privkey.pem}
    volumes:
      - ./nginx/templates:/etc/nginx/templates:ro
      # Runs after the image's own 20-envsubst step; see the script's comment.
      - ./nginx/entrypoint.d/99-cert-reload.sh:/docker-entrypoint.d/99-cert-reload.sh:ro
      - ./nginx/ssl:/etc/nginx/ssl:ro
      - ./certbot/conf:/etc/letsencrypt:ro
      - ./certbot/www:/var/www/certbot:ro
    healthcheck:
      test: ["CMD", "nginx", "-t"]
      interval: 30s
      timeout: 5s
      retries: 3
    depends_on:
      # nginx resolves upstream hostnames at startup and refuses to start if
      # `backend` does not resolve, so waiting for merely "started" makes the
      # proxy crash-loop alongside a backend that is still restarting.
      backend:
        condition: service_healthy
    restart: unless-stopped

  certbot:
    image: certbot/certbot
    profiles:
      - prod
    volumes:
      - ./certbot/conf:/etc/letsencrypt
      - ./certbot/www:/var/www/certbot
    entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"

  # Log viewer. Bound to loopback only: it mounts the Docker socket, which is
  # root-equivalent on the host, and ships no authentication of its own.
  # Reach it over an SSH tunnel: ssh -L 9999:localhost:9999 <host>
  dozzle:
    image: amir20/dozzle:latest
    profiles:
      - debug
    ports:
      - "127.0.0.1:9999:8080"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    restart: unless-stopped

volumes:
  postgres_data:
  gradle_cache: