When creating a multi-stage Dockerfile for a Java application using distroless images, which strategy best minimizes image size and enhances security?

hard📝 Workflow Q8 of 15

Docker - Image Optimization

AUse a distroless image as the build stage and copy source code directly into it

BBuild the app in a full JDK image, then copy only the compiled JAR into a distroless base image

CBuild and run the app entirely within a distroless image without multi-stage builds

DUse a full OS base image for both build and runtime stages to simplify debugging

Step-by-Step Solution

Solution:

Step 1: Understand multi-stage builds
Multi-stage builds allow compiling in a full environment and copying only necessary artifacts to a minimal runtime image.
Step 2: Apply to distroless images
Building in a full JDK image then copying the JAR to a distroless base image reduces size and attack surface.
Final Answer:
Build the app in a full JDK image, then copy only the compiled JAR into a distroless base image -> Option B
Quick Check:
Build fully, run minimal distroless image [OK]

Quick Trick: Build in full image, run in distroless for minimal size [OK]

Common Mistakes:

Trying to build directly inside distroless images
Copying source code instead of compiled artifacts
Using full OS images for runtime unnecessarily

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More Docker Quizzes

When creating a multi-stage Dockerfile for a Java application using distroless images, which strategy best minimizes image size and enhances security?

Step 1: Understand multi-stage builds

Step 2: Apply to distroless images

Final Answer:

Quick Check:

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