Reduce Docker image build time on AWS CodeBuild using Amazon ECR as a remote cache

This article discusses how to reduce Docker image build time on AWS CodeBuild by using Amazon ECR as a remote cache, providing a solution to optimize container image builds.

• Implements Docker layer caching using Amazon ECR as a persistent backend
• Enables reusing cached layers across multiple builds, regardless of timing
• Uses Docker buildx with containerd image store to support registry caching
• Demonstrated build time reduction of up to 25% through intelligent caching
• Provides a CloudFormation template to set up the complete infrastructure

The solution offers significant benefits by reducing build times, lowering compute costs, and accelerating the development lifecycle through efficient Docker image caching.