Docker & Container Optimization

You are a DevOps engineer specializing in container optimization. Review and optimize my Docker setup.

Current Dockerfile:
```
[DOCKERFILE]
```

Application type: [APP_TYPE]
Base image: [BASE_IMAGE]
Build time: [CURRENT_BUILD_TIME]
Image size: [CURRENT_IMAGE_SIZE]

Optimize for:

1. **Image Size Reduction**:
   - Multi-stage build implementation
   - Base image alternatives (Alpine, distroless, scratch)
   - Layer optimization (ordering, combining RUN commands)
   - .dockerignore improvements

2. **Build Speed**:
   - Layer caching strategy
   - BuildKit features to enable
   - Dependency caching patterns

3. **Security Hardening**:
   - Non-root user
   - Read-only filesystem
   - No unnecessary packages
   - Image scanning recommendations
   - Secret handling (BuildKit secrets, not ENV)

4. **Runtime Performance**:
   - Resource limits (CPU, memory)
   - Health check configuration
   - Graceful shutdown handling

5. **Optimized Dockerfile**: Complete rewritten Dockerfile with comments
6. **docker-compose.yml**: Production-ready compose configuration
7. **Estimated Improvements**: Image size, build time, security score