XK0-006 Automation, Orchestration, and Scripting Practice Question
An administrator needs to create a Docker image from a Dockerfile located in the current directory and tag it as 'myapp:v1'. Which command should be used?
⚠ Common exam trap
XK0-006 often tests the distinction between image creation commands: candidates may confuse `docker build` with `docker create` or `docker commit`, or mistakenly think `docker image create` is valid.
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 -t myapp:v1 .
The correct command is `docker build -t myapp:v1 .` because `docker build` reads a Dockerfile from the specified context (the `.` means the current directory) and builds an image. The `-t` flag tags the resulting image with the name and tag `myapp:v1`. This is the standard way to create an image from a Dockerfile.
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 -t myapp:v1 .
Why it's wrong here
'docker create' instantiates a stopped container from an existing image; it never reads a Dockerfile or builds layers. It tempts because it accepts -t and a context path, and would be correct when creating a container from an image that already exists.
- ✗
docker commit myapp:v1 .
Why it's wrong here
'docker commit' snapshots a running container's filesystem into an image, ignoring any Dockerfile. It tempts because it does produce a tagged image, and would be correct after manually modifying a container and wanting to capture those changes as an image.
- ✓
docker build -t myapp:v1 .
Why this is correct
docker build reads the Dockerfile from the specified context, and the dot sets the current directory as that context. The -t flag assigns the repository and tag myapp:v1, satisfying both the build-from-current-directory and tagging requirements in one command.
- ✗
docker image create myapp:v1 .
Why it's wrong here
No 'docker image create' subcommand exists; image creation from a Dockerfile is performed by 'docker build', which also applies the -t tag. It tempts as a guess at the modern image-management syntax, and would be right only if such a create subcommand actually existed.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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