XK0-006 Automation, Orchestration, and Scripting Practice Question
A DevOps engineer is writing a Bash script to automate deployment of a containerized application. The script must: (1) exit immediately if any command fails, (2) build a Docker image with tag 'myapp:latest' from the current directory, (3) run a container from that image in detached mode with port mapping 8080:80, (4) set environment variable ENV=production inside the container, and (5) bind mount a host directory /data to /app/data inside the container. Which TWO of the following snippets should be included in the script to meet these requirements? (Choose TWO.)
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
✓
set -e
(`set -e`) ensures the script exits immediately if any command fails, satisfying requirement 1. Option C (`docker build -t myapp:latest .`) builds the Docker image with the required tag, satisfying requirement 2. The run commands (A and E) are not selected because requirement 2 (building the image) must be completed before running the container, and the question asks for two snippets that meet the requirements; the run command would be a separate part of the script. Option D is also a valid build command but uses the long form `--tag`; either C or D would work, but C is the more common short form. Option E has a syntax error (`-eENV=production` missing space).
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 run -d -p 8080:80 -e ENV=production -v /data:/app/data myapp:latest
Why it's wrong here
This `docker run` command correctly meets requirements 3, 4, and 5, but it does not handle requirement 2 (building the image) or requirement 1 (exit on error).
- ✓
set -e
Why this is correct
Correct. `set -e` causes the script to exit if any command fails, satisfying requirement 1.
- ✓
docker build -t myapp:latest .
Why this is correct
Correct. `docker build -t myapp:latest .` builds the image from the current directory with the specified tag, satisfying requirement 2.
- ✗
docker build --tag myapp:latest .
Why it's wrong here
This command also builds the image correctly using the long form `--tag`, but it is functionally identical to C; only one build command is needed.
- ✗
docker run -d -p 8080:80 -eENV=production -v /data:/app/data myapp:latest
Why it's wrong here
This `docker run` command has a syntax error (`-eENV=production` should be `-e ENV=production`), so it is invalid.
Go deeper
Related to this question
Learn chapter
Networking Fundamentals and Configuration
Key term
Bash script
A Bash script is a text file containing a sequence of commands for the Unix shell Bash, allowing users to automate repetitive tasks and streamline system administration on Linux and macOS.
Key term
Mount
Mounting is the process of making a file system or storage device accessible to a computer's operating system by attaching it to a specific directory in the existing directory tree.
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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.