Docker - in CI/CD
In a CI/CD pipeline, you want to deploy a Docker container with environment variables set from pipeline secrets. Which command correctly passes an environment variable 'API_KEY' to the container?
In a CI/CD pipeline, you want to deploy a Docker container with environment variables set from pipeline secrets. Which command correctly passes an environment variable 'API_KEY' to the container?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Recall Docker environment variable syntax
Use '-e VAR=value' or '-e VAR' to pass env vars to containers.Step 2: Identify correct option
docker run -e API_KEY=$API_KEY myapp:latest uses '-e API_KEY=$API_KEY' which passes the pipeline secret to container.Final Answer:
docker run -e API_KEY=$API_KEY myapp:latest -> Option BQuick Check:
Pass env var with -e flag [OK]
Quick Trick: Use '-e VAR=value' to pass env vars to Docker containers [OK]
Common Mistakes:
- Using incorrect flags like --env-file with single var
- Using '-env' or '--set-env' which are invalid
- Not expanding pipeline secret variable
Master "in CI/CD" in Docker
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