DockerImageAsset: environmental variables

[austinmw]

Describe the feature

Is it possible to include environmental variables in the docker build? I don't see it included here: https://docs.aws.amazon.com/cdk/api/v2/python/aws_cdk.aws_ecr_assets/DockerImageAsset.html

Use Case

I would like to include the following env vars when building docker images with CDK:

DOCKER_BUILDKIT=1
CDK_DOCKER=finch

Proposed Solution

No response

Other Information

No response

Acknowledgements

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

CDK version used

latest

Environment details (OS name and version, etc.)

MacOS

[michaelwiles]

Is it possible to do this with docker build?

[austinmw]

As is, I would need to add to the app instructions to export these env vars before calling CDK deploy.

[pahud]

Does it help to export that before the cdk deploy like?

export DOCKER_BUILDKIT=1
npx cdk synth

[austinmw]

@pahud Sure it works to explicitly export env vars, but I was hoping they could be defined in the build process.