mediumMultiple ChoiceObjective-mapped
XK0-006 Practice Question: A systems administrator wants to build a custom…
A systems administrator wants to build a custom Docker image from a Dockerfile located in the current directory. Which command should be used?
⚠ Common exam trap
Candidates often confuse `docker build` with the deprecated `docker image build` syntax or mistakenly think `docker commit` can build from a Dockerfile, when it actually captures container state changes.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
docker build .
The `docker build .` command reads the Dockerfile from the current directory and builds a custom Docker image from its instructions. This is the standard command for building an image from a Dockerfile, where the dot represents the build context (the current directory).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
docker create .
Why it's wrong here
Creates container.
- ✗
docker commit .
Why it's wrong here
Creates from container.
- ✓
docker build .
Why this is correct
Builds from Dockerfile.
- ✗
docker image build .
Why it's wrong here
Alternative, but docker build is standard.
Go deeper
Related to this question
About these practice questions
This XK0-006 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-006 exam.