Deployment package

In this section, we will see how to build a deployment package for the function and how to deploy it to the AWS Lambda console.

Uploading a ZIP file

As mentioned in Chapter 1, Go Serverless, Go is a compiled language. Therefore, you must generate an executable binary using the following Shell script:

#!/bin/bash

echo "Build the binary"
GOOS=linux GOARCH=amd64 go build -o main main.go

echo "Create a ZIP file"
zip deployment.zip main

echo "Cleaning up"
rm main

The Lambda runtime environment is based on an Amazon Linux AMI; therefore, the handler should be compiled for Linux (note the use of the GOOS flag).

For Windows users, it's recommended you to use the build-lambda-zip tool...