$ npm install
$ docker run --rm -v $(pwd):/var/task lambci/lambda:build-nodejs8.10
# if getting searchResults
$ docker run --rm -v $(pwd):/var/task lambci/lambda:nodejs8.10 index.handler '{"searchWord": "hoge hoge", "siteDomain": "example.com"}' | jq '.searchResults'
# if getting screenshot
$ docker run --rm -v $(pwd):/var/task lambci/lambda:nodejs8.10 index.handler '{"searchWord": "hoge hoge", "siteDomain": "example.com"}' | jq '.screenShot' | xxd -r -p > $(pwd)/image.png