buildspec.yml file for AWS CodeBuild that builds AWS Lambda (Go) and uploads to the specified S3 bucket

buildspec.yml

version: 0.2

env:
  variables:
    S3_BUCKET: bucket-name
    PACKAGE: package-name
    MAINFILE: main.go

phases:
  install: 
    runtime-versions:
      golang: 1.20
    commands:
      - mkdir -p "/go/src/$(dirname ${PACKAGE})"
      - ln -s "${CODEBUILD_SRC_DIR}" "/go/src/${PACKAGE}"
      # Print all environment variables
      - env
      - cd "/go/src/${PACKAGE}"
      - go get
  pre_build:
    commands:
      - cd "/go/src/${PACKAGE}"
  build:
    commands:
      # Build app
      - CGO_ENABLED=0 go build -o ${PACKAGE} ${MAINFILE}
  post_build:
    commands:
      - echo Build completed on `date`
artifacts:
  type: zip
  files:
    - ${PACKAGE}
  name: ${PACKAGE}
  namespace-type: NONE
  packaging: ZIP
  path: /${PACKAGE}