`AWS::Amplify::App` - Support for specifying a `buildImage`

[david-perez]

Name of the resource

AWS::Amplify::App

Resource name

No response

Description

Currently, one is able to specify custom build images (e.g. from ECR) in which to run the build spec of an AWS Amplify application using the AWS Console: https://docs.aws.amazon.com/amplify/latest/userguide/custom-build-image.html

However, there is no way to do so in CFN: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-amplify-app.html#cfn-amplify-app-buildspec. You can specify the buildSpec, but not the buildImage.

And hence no way to do so in the CDK: https://github.com/aws/aws-cdk/issues/15016

Other Details

No response

[dbartholomae]

I recently had a similar question (#1140), and there seems to be an environment variable called _CUSTOM_IMAGE. I haven't tried it yet, though.

[ferdingler]

Hi @david-perez , apologies for the delay here. @dbartholomae is correct, you can actually set the custom image as an environment variable _CUSTOM_IMAGE with a value of your ECR registry. In CloudFormation, this would be something like

MyApp:
  Type : AWS::Amplify::App
  Properties:
      EnvironmentVariables:
          - Name: _CUSTOM_IMAGE
            Value: 1234.ecr.aws/foo/build-image.al2-20220929223003

[david-perez]

While _CUSTOM_IMAGE works, it's not documented: https://docs.aws.amazon.com/amplify/latest/userguide/environment-variables.html

[dannylinden]

+1