Recall & Review
beginner
What is the main purpose of a development Dockerfile?
A development Dockerfile is designed to help developers build and test code quickly. It usually includes tools for debugging, live reload, and unminified code for easier troubleshooting.
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beginner
Why do production Dockerfiles often have smaller image sizes?
Production Dockerfiles focus on creating lightweight images by removing unnecessary tools and files. This reduces attack surface and speeds up deployment.
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intermediate
Name one key difference in commands between development and production Dockerfiles.
Development Dockerfiles often use commands to install debugging tools and enable live reload, while production Dockerfiles skip these and focus on running optimized, compiled code.
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intermediate
How does caching differ between development and production Dockerfiles?
Development Dockerfiles may prioritize faster rebuilds with caching layers for quick code changes, while production Dockerfiles optimize caching for stable, repeatable builds.
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advanced
What is a multi-stage build in Docker and how does it help with production Dockerfiles?
A multi-stage build uses multiple FROM statements to separate build and runtime environments. It helps production Dockerfiles by allowing you to compile code in one stage and copy only the necessary files to a smaller final image.
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Which feature is commonly included in development Dockerfiles but removed in production?
✗ Incorrect
Development Dockerfiles include debugging tools to help developers, which are usually removed in production for security and size reasons.
What is the main goal of a production Dockerfile?
✗ Incorrect
Production Dockerfiles aim to create lightweight, secure images optimized for deployment.
What Docker feature helps create smaller production images by separating build and runtime?
✗ Incorrect
Multi-stage builds allow building code in one stage and copying only needed files to the final image, reducing size.
Which base image type is preferred for production Dockerfiles?
✗ Incorrect
Minimal base images reduce size and attack surface in production.
Why might development Dockerfiles include unminified code?
✗ Incorrect
Unminified code is easier to read and debug during development.
Explain the key differences between development and production Dockerfiles.
Think about what each environment needs for speed, size, and security.
You got /4 concepts.
Describe how multi-stage builds improve production Dockerfiles.
Consider how to keep the final image clean and small.
You got /4 concepts.