GitHub workflow to deploy an AWS Lambda function using the Swift AWS Lambda Runtime (https://github.com/swift-server/swift-aws-lambda-runtime). Found this necessary since there are issues building/running x86 Docker containers on a M1 MacBook.

Dockerfile

FROM swift:5.3-amazonlinux2

RUN yum -y install zip openssl-devel

package.sh

#!/bin/bash
## Taken from: https://github.com/swift-server/swift-aws-lambda-runtime/blob/main/Examples/LambdaFunctions/scripts/package.sh
##===----------------------------------------------------------------------===##
##
## This source file is part of the SwiftAWSLambdaRuntime open source project
##
## Copyright (c) 2020 Apple Inc. and the SwiftAWSLambdaRuntime project authors
## Licensed under Apache License v2.0
##
## See LICENSE.txt for license information
## See CONTRIBUTORS.txt for the list of SwiftAWSLambdaRuntime project authors
##
## SPDX-License-Identifier: Apache-2.0
##
##===----------------------------------------------------------------------===##

set -eu

executable=$1

target=".build/lambda/$executable"
rm -rf "$target"
mkdir -p "$target"
cp ".build/release/$executable" "$target/"
# add the target deps based on ldd
ldd ".build/release/$executable" | grep swift | awk '{print $3}' | xargs cp -Lv -t "$target"
cd "$target"
ln -s "$executable" "bootstrap"
zip --symlinks lambda.zip *

workflow.yml

name: deploy-swift-aws-lambda-runtime
on:
  push:
    branches: [ master, dev ]
  pull_request:
    branches: [ master ]
  workflow_dispatch:
jobs:
  deploy:
    runs-on: ubuntu-latest
    env:
      APP_NAME: HelloWorld
      S3_BUCKET: MyBucket
      LAMBDA_FUNCTION_NAME: HelloWorld
    steps:
      - uses: actions/checkout@v2
      - name: AWS Credentials
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_ACCESS_KEY_SECRET }}
          aws-region: us-east-1
      - name: Docker Image
        run: docker build -f $GITHUB_WORKSPACE/Dockerfile -t lambda-runtime .
      - name: Build
        run: docker run -t --rm -w /build -v $GITHUB_WORKSPACE:/build lambda-runtime swift build -c release -Xswiftc -g
      - name: Package
        run: docker run -t --rm -w /build -v $GITHUB_WORKSPACE:/build lambda-runtime bash -cl "./package.sh $APP_NAME"
      - name: S3
        run: aws s3 cp $GITHUB_WORKSPACE/.build/lambda/$APP_NAME/lambda.zip s3://$S3_BUCKET/$APP_NAME.zip
      - name: Lambda
        run: aws lambda update-function-code --function $LAMBDA_FUNCTION_NAME --s3-bucket $S3_BUCKET --s3-key $APP_NAME.zip