Docker - Image Optimization
You want to reduce your Docker image size by squashing layers but also keep some intermediate layers for caching. Which approach is best?
You want to reduce your Docker image size by squashing layers but also keep some intermediate layers for caching. Which approach is best?
hard📝 Best Practice Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand multi-stage builds
Multi-stage builds allow creating intermediate images for caching and a final optimized image.Step 2: Combine multi-stage builds with squashing
Squashing only the final stage reduces image size while keeping intermediate layers for cache.Final Answer:
Use multi-stage builds and squash only the final stage -> Option AQuick Check:
Multi-stage + squash final stage = best size and cache [OK]
Quick Trick: Squash final stage in multi-stage builds for best results [OK]
Common Mistakes:
- Squashing all layers loses caching benefits
- Avoiding squashing misses size reduction
- Deleting files manually is error-prone
Master "Image Optimization" in Docker
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Docker Quizzes