(codebuild): allow LinuxGpuBuildImage to directly reference an image from any ECR repository

[katrinevr412]

This is to bring feature parity between LinuxBuildImage (https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-codebuild.LinuxBuildImage.html#static-fromwbrecrwbrrepositoryrepository-tag) and LinuxGpuBuildImage (https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-codebuild.LinuxGpuBuildImage.html).

Specifically, add the fromEcrRepository method in this class.

Use Case

Currently need to hack around this constraint to obtain an Linux GPU build image using a customised ECR repository. We would like a direct way to declare this as in LinuxBuildImage, i.e.

const myRepository: IRepository = ecr.Repository.fromRepositoryArn(this, "<some ID>", "<some repository ARN>");
// this works for LinuxBuildImage but I want LINUX_GPU
return LinuxGpuBuildImage.fromEcrRepository(myRepository, "latest");

Proposed Solution

Add a fromEcrRepository method in LinuxGpuBuildImage similar to the one in LinuxBuildImage to hook up with the underlying Cfn classes.

Other

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

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This is a 🚀 Feature Request

[iRoachie]

@KatrinaYang2302 I took a stab at this in #17170. Let me know if it's what you were intending.

[github-actions]

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