Publishes Python Dependencies in a requirements.txt to a AWS Lambda Layer

publish_lambda_layer.sh

REGION=eu-west-2
RUNTIME=python3.8
LAYER_NAME=scrapy

docker run -v $(pwd):/out -it lambci/lambda:build-$RUNTIME \
    pip install -r /out/requirements.txt -t /out/build/$LAYER_NAME/python

cd build/$LAYER_NAME
zip -r ../../$LAYER_NAME.zip python/
cd ../..

aws lambda publish-layer-version \
    --layer-name $LAYER_NAME \
    --region $REGION \
    --zip-file fileb://$LAYER_NAME.zip \
    --compatible-runtimes $RUNTIME

rm -rf build *.zip