Install requirements and build a Lambda layer compatible zip

build_layer_node.sh

#!/bin/sh
if [[ ! -f package.json ]] ; then
    echo "File package.json doesn't exist. Run npm init and npm install first."
    exit
fi

npm ci
mkdir -p dist/lambda_layer/nodejs/node_modules
cp -r node_modules dist/lambda_layer/nodejs/
cd dist/lambda_layer && zip -r lambda_layer.zip nodejs
mv lambda_layer.zip ../.
cd .. && rm -fr lambda_layer

build_layer_py.sh

#!/bin/sh
mkdir -p build/lambda_layer/python
pip install -r requirements.txt -t build/lambda_layer/python
cd build/lambda_layer && zip -r lambda_layer.zip python
mv lambda_layer.zip ../.

generate_lambda_layer.md

Generate Lambda layer script

The script will generate a Zipped Lambda layer in the support strucutre, and it can be safely uploaded and used as part of your Lambda function.