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Docker Exam DCA Topic 3 Question 84 Discussion

Actual exam question for Docker's Docker Certified Associate Exam exam
Question #: 84
Topic #: 3
[All Docker Certified Associate Exam Questions]

Is this an advantage of multi-stage builds?

Solution: faster image builds by allowing parallel execution of Docker builds

Show Suggested Answer Hide Answer
Suggested Answer: B

= Simultaneously creating and tagging multiple images is not an advantage of multi-stage builds.Multi-stage builds are a feature that allows you to use multiple FROM statements in your Dockerfile, each starting a new stage of the build1. You can selectively copy artifacts from one stage to another, leaving behind everything you don't want in the final image.This helps you to optimize the size and security of your images, as well as to simplify your build process12. However, multi-stage builds do not create or tag multiple images at once.Each Dockerfile produces one final image, which is the result of the last stage in the Dockerfile1.If you want to create and tag multiple images from a single Dockerfile, you need to use the--targetoption with thedocker buildcommand, and specify the name of the stage you want to build and tag3.Reference:

Multi-stage builds | Docker Docs

What Are Multi-Stage Docker Builds? - How-To Geek

Stop at a specific build stage | Docker Docs


by Abel at Apr 12, 2024, 10:14 AM

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Goldie
1 days ago
Okay, but what if one of those parallel builds fails? Then you've got a whole mess to clean up. Sounds risky to me. I'll take my time and do it the old-fashioned way, thank you very much.
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Artie
2 days ago
Come on, how can you not see this as an advantage? It's like having a Ferrari for your Docker builds - you'd be a fool not to take advantage of the speed!
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Herminia
3 days ago
I'm not so sure about this one. While the parallel execution is nice, I've heard it can also add complexity and potential for errors. Gotta weigh the pros and cons, you know?
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Glory
5 days ago
Agreed, this is a great feature. Being able to run multiple build stages in parallel is a game-changer. It's like having a team of Docker build ninjas working simultaneously.
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Yuki
7 days ago
Definitely an advantage! Faster image builds are a huge time-saver, especially for complex projects. I'm a big fan of anything that speeds up the development process.
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