Dockerfile Security and Layer Optimizer Prompt

When to use this

Use this prompt to audit Dockerfiles for layer caching optimization, security hardening, and minimal image size.

The template

Refactor and optimize the provided Dockerfile.

Requirements:
1. Implement multi-stage builds separating build tools from runtime execution dependencies.
2. Optimize layer caching order (copy dependency manifests `package.json`/`requirements.txt` before source code).
3. Ensure runtime executes under a unprivileged user (`USER 10001`).
4. Minimize final image size by clearing build caches and using Alpine/Distroless bases.

Dockerfile to Optimize:
```dockerfile
[PASTE DOCKERFILE HERE]
```

How to use

Paste your unoptimized Dockerfile into the template.