aws-ecr-assets: support for .containerignore file and / or alternative ignore file

[koshic]

Describe the feature

Podman supports two different ignore file variants: .dockerignore (for compatibility reasons) and .containerignore, see https://docs.podman.io/en/stable/markdown/podman-build.1.html#files. Moreover, it's possible to provide alternative ignore file.

But, .dockerignore file name is hardcoded in aws cdk:

aws-cdk/packages/aws-cdk-lib/aws-ecr-assets/lib/image-asset.ts

Line 454 in aebb331

const ignore = path.join(dir, '.dockerignore');

Use Case

.containerignore natively supported by Podman is ignored by aws cdk, which force me to rename file or use include / exclude properties.

Proposed Solution

To add ability to specify alternative ignore file (as it already implemented for Dockerfile itself), and / or support vendor-free file names by default (Containerfile / .containerignore).

Other Information

No response

Acknowledgements

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

CDK version used

2.178.2

Environment details (OS name and version, etc.)

mac os

[pahud]

Makes sense for me. We haven't fully tested with podman but given its popularity we should consider this. Please help us prioritize 👍 and we welcome a PR to move this forward.