Discuss Docker DCA Exam Topic 5 Question 55

Some Docker images take time to build through a Continuous Integration environment. You want to speed up builds and take advantage of build caching.

Where should the most frequently changed part of a Docker image be placed in a Dockerfile?

Aat the bottom of the Dockerfile

Bafter the FROM directive

Cat the top of the Dockerfile

Din the ENTRYPOINT directive

Suggested Answer: A

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12 comments · newest first

Reita 11 months ago

I’m surprised this isn’t more common knowledge!

Fausto 11 months ago

Definitely after the FROM directive, that’s where it goes!

Natalie 12 months ago

Wait, are you sure? I thought it was better at the top.

Alishia 12 months ago

Totally agree, that’s the best practice.

Glory 12 months ago

It should be at the bottom of the Dockerfile for caching!

Blair 1 year ago

I’m a bit confused; I thought the ENTRYPOINT directive was for specifying the command to run, not for caching purposes.

Rory 1 year ago

I practiced a similar question, and I think it was suggested to put the frequently changed parts after the FROM directive to optimize caching.

Catrice 1 year ago

I remember something about caching layers, and I think the most frequently changed parts should go at the bottom to avoid invalidating the cache.

Virgie 1 year ago

I’m not entirely sure, but I feel like it might be better to place them at the top so that the base layers can be cached effectively.

Rupert 1 year ago

I think I've got a handle on this. The key is to understand the difference between the two Predicate objects and how they're being combined in the stream() method. I'll work through it carefully and try to identify the correct answer.

Devorah 1 year ago

I remember a practice question where we had to evaluate URLs in an email. I think checking if the email body contains a URL might be one of the right answers.

Jaclyn 1 year ago

This looks like a straightforward Salesforce automation question. I think the key is to identify the specific requirements and match them to the appropriate Salesforce tools.

Docker DCA Exam - Topic 5 Question 55 Discussion