Dockerfile Best Practices

Trigger

Use this skill when:

• Writing a new Dockerfile from scratch
• Reviewing or optimizing an existing Dockerfile
• Reducing image size or build time
• Hardening a container image for production
• Fixing layer caching issues that slow CI/CD builds

Required Inputs

• Target application language/runtime (e.g., Node.js, Python, Go, Java)
• Whether the image is for development or production
• Any specific base image requirements or constraints

Workflow