Which of the following is the correct syntax to define a GitLab CI job that uses Docker and runs a simple command?

easy📝 Syntax Q3 of 15

Docker - in CI/CD

Abuild_job:\n image: docker latest\n script:\n - echo 'Building...'

Bbuild_job:\n image: docker:latest\n script:\n - echo 'Building...'

Cbuild_job:\n image docker:latest\n script:\n - echo 'Building...'

Dbuild_job:\n image: 'docker latest'\n script:\n - echo 'Building...'

Step-by-Step Solution

Solution:

Step 1: Check YAML syntax for job definition
The correct YAML syntax uses a colon after keys and proper indentation. build_job:\n image: docker:latest\n script:\n - echo 'Building...' uses colons and indentation correctly.
Step 2: Validate image name format
build_job:\n image: docker:latest\n script:\n - echo 'Building...' uses docker:latest which is the correct image tag format. Others have missing colons or wrong spacing.
Final Answer:
Correct YAML with image and script keys properly formatted -> Option B
Quick Check:
YAML syntax + image tag = build_job:\n image: docker:latest\n script:\n - echo 'Building...' [OK]

Quick Trick: Use colons and proper indentation in YAML [OK]

Common Mistakes:

Master "in CI/CD" in Docker

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