docker-compose.yaml

version: "3"
services:
  db:
    build:
      context: ./db
      args:
        - USER_PASSWORD=${DB_USER_PASSWORD:?db user password must be set}
    networks:
      - internal-network
    volumes:
      - ${DB_FILES_PATH:?db files path must be specified so that you never loose them}:/var/lib/postgresql/data

  server_app:
    build:
      context: ./server-app
      args:
        - BINARY_PATH_APP=/server_binaries/app
        - LOGS_DIR=/logs
        - IOS_PRIVATE_KEY_PATH=/ios_private_key
        - PSQL_HOSTNAME=db
        - PSQL_PASSWORD=${DB_USER_PASSWORD:?db user password must be set}
        - OSM_PROD_USER=${OSM_PROD_USER:?OSM prod user must be set}
        - OSM_PROD_PASSWORD=${OSM_PROD_PASSWORD:?OSM prod user password must be set}
        - OSM_TESTING_USER=${OSM_TESTING_USER:?OSM testing user must be set}
        - OSM_TESTING_PASSWORD=${OSM_TESTING_PASSWORD:?OSM testing user password must be set}
        - OFF_PROD_USER=${OFF_PROD_USER:?OFF prod user must be set}
        - OFF_PROD_PASSWORD=${OFF_PROD_PASSWORD:?OFF prod user password must be set}
        - OFF_TESTING_USER=${OFF_TESTING_USER:?OFF testing user must be set}
        - OFF_TESTING_PASSWORD=${OFF_TESTING_PASSWORD:?OFF testing user password must be set}
        - AWS_S3_BUCKET_NAME=${AWS_S3_BUCKET_NAME:?AWS S3 bucket name must be set}
        - AWS_S3_REGION=${AWS_S3_REGION:?AWS S3 region must be set}
        - AWS_S3_ACCESS_KEY_ID=${AWS_S3_ACCESS_KEY_ID:?AWS S3 access key ID must be set}
        - AWS_S3_SECRET_ACCESS_KEY=${AWS_S3_SECRET_ACCESS_KEY:?AWS S3 secret access key must be set}
        - JWT_SECRET=${JWT_SECRET:?JWT secret must be set}
        - METRICS_ENDPOINT=${METRICS_ENDPOINT:?a random METRICS_ENDPOINT must be set}
    networks:
      - internal-network
      - external-network
    ports:
      - "127.0.0.1:8080:8080"
    volumes:
      - ${BINARY_PATH_APP:?path to binary must be set}:/server_binaries/app
      - ${LOGS_DIR:?path to logs dir of server must be set}:/logs
      - ${IOS_PRIVATE_KEY_PATH:?path to iOS private key must be set}:/ios_private_key
    depends_on:
      - db
    restart: always
    deploy:
      resources:
        limits:
          memory: 256M

  db_backupper:
    build:
      context: ./db-backupper
      args:
        - BACKUPS_DIR_PATH=/backups
        - BACKUPS_HOUR_MINUTE=${BACKUPS_HOUR_MINUTE:?backups time must be set}
        - PSQL_URL=postgresql://main_user:${DB_USER_PASSWORD}@db/main
    networks:
      - internal-network
    volumes:
      - ${BACKUPS_DIR_PATH:?path to dir for backups files}:/backups
    depends_on:
      - db

  # https://medium.com/@math21/how-to-monitor-a-ktor-server-using-grafana-bab54a9ac0dc
  prometheus:
    build:
      context: ./prometheus
      args:
        - METRICS_ENDPOINT=${METRICS_ENDPOINT:?a random METRICS_ENDPOINT must be set}
    restart: always
    ports:
      - "3570:9090"
    command: --config.file=/etc/prometheus/prometheus.yml --log.level=debug
    networks:
      - internal-network
    links:
      - server_app

  # https://medium.com/@math21/how-to-monitor-a-ktor-server-using-grafana-bab54a9ac0dc
  grafana:
    build:
      context: ./grafana
      args:
        - GRAFANA_ADMIN_PASSWORD=${GRAFANA_ADMIN_PASSWORD:?grafana admin password must be set}
    ports:
      - 3000:3000
    user: "104"
    networks:
      - internal-network
      - external-network
    links:
      - server_app
      - prometheus

networks:
  internal-network:
    driver: bridge
    internal: true
  external-network:
    driver: bridge