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Which command correctly enables BuildKit for a Docker build?

easy📝 Syntax Q12 of 15
Docker - Image Optimization
Which command correctly enables BuildKit for a Docker build?
Adocker build --enable-buildkit .
Bdocker build --buildkit=enable .
Cdocker build -buildkit 1 .
DDOCKER_BUILDKIT=1 docker build .
Step-by-Step Solution
Solution:

  1. Step 1: Recall how to enable BuildKit

    BuildKit is enabled by setting the environment variable DOCKER_BUILDKIT=1 before running the docker build command.

  2. Step 2: Analyze options

    Only DOCKER_BUILDKIT=1 docker build . uses the correct environment variable syntax. Options B, C, and D use invalid flags or syntax.

  3. Final Answer:

    DOCKER_BUILDKIT=1 docker build . -> Option D

  4. Quick Check:

    Enable BuildKit with env var DOCKER_BUILDKIT=1 [OK]
Quick Trick: Set DOCKER_BUILDKIT=1 before docker build command [OK]
Common Mistakes:
  • Using invalid flags like --buildkit=enable
  • Trying to pass BuildKit as a docker build option
  • Forgetting to set environment variable

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