docker-compose.yml

# =============================================================
# docker-compose.yml — DevOps Observability Project
# For local development and testing ONLY
# Production deployment uses GitHub Actions + direct docker run
# =============================================================

services:
  devops-observability:
    build:
      context: ./app
      dockerfile: Dockerfile

    # Image tag — always points to latest stable version
    image: devops-observability:v5

    # Container name — replaces random Docker-assigned names
    container_name: devops-observability-container

    # Port mapping: host:container
    ports:
      - "8080:80"

    # Restart policy — container auto-restarts if it crashes
    # unless-stopped = restart always EXCEPT when manually stopped
    # This is what keeps the app alive on EC2 after reboots
    restart: unless-stopped

    # Healthcheck — mirrors what we defined in Dockerfile
    # Compose runs this independently to track container health
    healthcheck:
      test: ["CMD", "wget", "-qO-", "http://localhost/health"]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 5s