Microsoft GH-200 Exam - Topic 3 Question 11 Discussion

Actual exam question for Microsoft's GH-200 exam

Question #: 11
Topic #: 3

[All GH-200 Questions]

As a developer, how can you identify a Docker container action on GitHub?

AThe action's repository includes @actions/core in the root directory.

BThe action's repository name includes the keyword 'Docker.'

CThe action.yml metadata file references a Dockerfile file.

DThe action.yml metadata file has the runs.using value set to Docker.

Show Suggested Answer

Suggested Answer: D

In a Docker container action, the action.yml file includes the runs.using field, which is set to docker to specify that the action runs inside a Docker container. This is the key indicator that the action is a Docker container action.

by Orville at Mar 02, 2026, 08:21 AM

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Margarita

12 hours ago

C makes sense, but I thought Dockerfiles were optional for actions.

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Argelia

6 days ago

Wait, can you really identify it just by the runs.using value?

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Olen

11 days ago

A is interesting, but I’m not sure it’s a strong indicator.

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Terrilyn

16 days ago

I think B is misleading, not all Docker actions have "Docker" in the name.

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Gayla

21 days ago

D is definitely the right choice!

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Louvenia

27 days ago

I’m a bit confused about option A; I don’t remember if @actions/core specifically indicates a Docker action or not.

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Cecil

1 month ago

I practiced a question similar to this, and I recall that the action.yml file is crucial for defining the action's behavior.

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Staci

1 month ago

I'm not entirely sure, but I feel like option C could be correct since a Dockerfile is usually essential for Docker actions.

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Lera

1 month ago

I think option D sounds familiar because I remember something about the runs.using value indicating the environment.

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