Using volumes in Docker on Mac specifically is a huge pain point due to performance issues. CPU often spikes to above 100% utilization when there is heavy read or write operations inside the container (as it happens with the parcel-builder Docker container that the CDK construct NodejsFunction uses internally.

This has been very well documented in https://docs.docker.com/docker-for-mac/osxfs-caching/ and the workarounds are also described.

I suggest we force Docker volume mounts within this construct to start using Docker volume in "delegated" mode, to improve build performance (speed) on Mac based deployment environments.

I think a good starting point is:
https://github.com/aws/aws-cdk/blob/master/packages/%40aws-cdk/aws-lambda-nodejs/lib/builder.ts#L118

Use Case

Developing and deploying CDK stacks with many lambdas on a Mac machine.

Proposed Solution

Replace -v sourcevolume:targetvolume with -v sourcevolume:targetvolume:delegated

Other

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

This is a 🚀 Feature Request