305-300 Container Virtualization Practice Question
Which Dockerfile instruction is used to copy a file from the host file system into the image?
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
✓
COPY
The COPY instruction is the standard way to move files from the build context into the image.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RUN
Why it's wrong here
RUN executes commands inside the image.
- ✗
ADD
Why it's wrong here
ADD is more complex and handles URLs/archives; COPY is preferred for simple file transfers.
- ✗
PUSH
Why it's wrong here
PUSH is used for uploading images to registries.
- ✓
COPY
Why this is correct
COPY transfers files from the host to the image.
- ✗
IMPORT
Why it's wrong here
IMPORT is not a Dockerfile command.
About these practice questions
One of 194 original 305-300 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official LPI exam blueprint
This 305-300 practice question is part of Courseiva's free LPI 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 305-300 exam.