lambda_build_in_docker

An example of using a Docker container to build and deploy Lambdas.

For more information, see this blog post.

Building the Docker image

The docker directory contains the configuration files -- Dockerfile and Makefile -- used for this example.

docker build -t build-environment:latest docker/

Creating an empty Lambda

The empty Lambda, along with its log stream and security group, are created using CloudFormation, from the template cloudformation.yml. Create using the AWS Console or this utility script.

The template uses the name "Example" for this Lambda. You can change the name via a template parameter, but beware that you'll have to use the changed name in the next step.

Building and deploying the actual Lambda

To just build the Lambda, storing its bundle in the current directory:

docker run --rm --user $(id -u):$(id -g) -v $(pwd):/build -e DEPLOY_DIR=/build build-environment:latest

If you want to both build and deploy, you must provide the container with AWS credentials. The easiest way to do that is to define and pass environment variables:

docker run --rm -v $(pwd):/build -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY -e AWS_DEFAULT_REGION build-environment:latest deploy