To configure your Jenkins pipeline to automate the build and deployment of your AWS SAM application, your Jenkinsfile must contain lines that do the following:

Reference a build container image with the necessary runtime from the available images. The following example uses the public.ecr.aws/sam/build-nodejs14.x build container image.

Configure the pipeline stages to run the necessary AWS SAM command line interface (CLI) commands. The following example runs two AWS SAM CLI commands: sam build and sam deploy (with necessary options).

This example assumes that you have declared all functions and layers in your AWS SAM template file with runtime: nodejs14.x. 

https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/deploying-using-jenkins.html