docker-compose.yml

services:
  otel-collector:
    image: otel/opentelemetry-collector:latest
    command: ["--config=/etc/otel-config.yaml"]
    volumes:
      - ./otel-config.yaml:/etc/otel-config.yaml
    ports:
      - "4318:4318"   # OTLP HTTP
      - "8889:8889"   # Prometheus metrics
    networks:
      - observability

  prometheus:
    image: prom/prometheus:latest
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    ports:
      - "9090:9090"
    networks:
      - observability

  tempo:
    image: grafana/tempo:latest
    command: ["-config.file=/etc/tempo.yaml"]
    volumes:
      - ./tempo.yaml:/etc/tempo.yaml
    ports:
      - "3200:3200"   # Query frontend
      - "4317:4317"   # OTLP gRPC
    networks:
      - observability

  grafana:
    image: grafana/grafana:latest
    ports:
      - "3000:3000"
    environment:
      - GF_AUTH_ANONYMOUS_ENABLED=true
      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
      - GF_AUTH_DISABLE_LOGIN_FORM=true
    networks:
      - observability

  dummy-data-generator:
    build:
      context: .
      dockerfile: Dockerfile
    environment:
      - OTEL_EXPORTER_OTLP_ENDPOINT=tempo:4317
      - OTEL_EXPORTER_OTLP_PROTOCOL=grpc
      - OTEL_SERVICE_NAME=dummy-data-generator
    volumes:
      - ./logs:/app/logs
    networks:
      - observability

  loki:
    image: grafana/loki:latest
    ports:
      - "3100:3100"
    networks:
      - observability

  promtail:
    image: grafana/promtail:latest
    volumes:
      - ./promtail-config.yaml:/etc/promtail/config.yaml
      - ./logs:/var/log/app
    depends_on:
      - loki
    networks:
      - observability

networks:
  observability:
    driver: bridge

volumes:
  prometheus-data:
  loki-data:
  tempo-data:
  grafana-data: