Issue with codepipeline and CDK for lambda deployment

Hello,

I've seen this kind of setup/arrangements handled in the Codebuild/Buildspec step itself

i.e. Add the build, deploy, and package steps in the Build command of the buildspec.yml file

build:
    commands:
      - echo "Building the Docker image....."
      - docker build -t app/<app_name> .
      - docker tag app/<app_name> <aws_acct_id>.dkr.ecr.<aws_region>.amazonaws.com/app/<app_name>$COMMIT_SHA
      - docker push <aws_acct_id>.dkr.ecr.<aws_region>.amazonaws.com/app/<app_name>$COMMIT_SHA
      - echo "Build finished and image pushed on `date`"

You can then use the latest SHA/Tag of the ECR image to update lambda deployment.

HTH