Docker - in CI/CD
Why is it recommended to use the
docker:dind service with the --privileged flag in GitLab CI pipelines that build Docker images?Why is it recommended to use the docker:dind service with the --privileged flag in GitLab CI pipelines that build Docker images?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Docker-in-Docker requirements
The Docker daemon inside the dind service requires elevated privileges to run containers inside containers.Step 2: Role of
The--privilegedflag--privilegedflag grants the dind container the necessary permissions to operate Docker daemon correctly.Final Answer:
Docker daemon inside dind needs elevated privileges to run properly -> Option CQuick Check:
dind needs privileged mode for Docker daemon [OK]
Quick Trick: dind requires privileged mode to run Docker daemon [OK]
Common Mistakes:
- Thinking privileged speeds build
- Confusing privileged with root user in job
- Assuming privileged enables deployment
Master "in CI/CD" in Docker
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