Github Actions - Deploy Serverless Framework (AWS)

dev.yml

#
# Github Actions for Serverless Framework
#
# Create AWS_KEY and AWS_SECRET secrets in Github repository settings
# If you're using env.yml file, store its content as ENV Github secret
#
# Master branch will be deployed as DEV and every new tag starting with "v**" (e.g. v1.0, v1.2, v2.0, etc) will be deployed as PROD
#
# Learn more: https://maxkostinevich.com/blog/how-to-deploy-serverless-applications-using-github-actions/
#


name: Deploy Dev
on:
  push:
    branches:
      - master
jobs:
  deploy-dev:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - uses: actions/setup-node@v1
      with:
        node-version: '10.x'
    - name: Install Serverless Framework
      run: npm install -g serverless
    - name: Serverless AWS authentication
      run: sls config credentials --provider aws --key ${{ secrets.AWS_KEY }} --secret ${{ secrets.AWS_SECRET }}
    - name: Create env file
      run: | # cp sample.env.yml env.yml
        cat > env.yml << EOF
        ${{ secrets.ENV }}
        EOF
    - name: Install NPM dependencies
      run: npm install
    # Optional
    #- name: Build assets
    #  run: npm run assets-dev
    - name: Deploy Lambda functions
      run: sls deploy -s dev
    # Optional (to use with serverless-finch serverless plugin)
    #- name: Deploy assets to S3
    #  run: sls client deploy --no-delete-contents --no-confirm -s dev

prod.yml

#
# Github Actions for Serverless Framework
#
# Create AWS_KEY and AWS_SECRET secrets in Github repository settings
# If you're using env.yml file, store its content as ENV Github secret
#
# Master branch will be deployed as DEV and every new tag starting with "v**" (e.g. v1.0, v1.2, v2.0, etc) will be deployed as PROD
#
# Learn more: https://maxkostinevich.com/blog/how-to-deploy-serverless-applications-using-github-actions/
#


name: Deploy Prod
on:
  push:
    tags: # Deploy tag (e.g. v1.0) to production
      - 'v**'
jobs:
  deploy-prod:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - uses: actions/setup-node@v1
      with:
        node-version: '10.x'
    - name: Install Serverless Framework
      run: npm install -g serverless
    - name: Serverless AWS authentication
      run: sls config credentials --provider aws --key ${{ secrets.AWS_KEY }} --secret ${{ secrets.AWS_SECRET }}
    - name: Create env file
      run: | # cp sample.env.yml env.yml
        cat > env.yml << EOF
        ${{ secrets.ENV }}
        EOF
    - name: Install NPM dependencies
      run: npm install
    # Optional
    #- name: Build assets
    #  run: npm run assets-prod
    - name: Deploy Lambda functions
      run: sls deploy -s prod
    # Optional (to use with serverless-finch serverless plugin)
    #- name: Deploy assets to S3
    #  run: sls client deploy --no-delete-contents --no-confirm -s prod

Made some small tweaks to get it to work for me. Notably, using pnpm in a monorepo-style system. This workaround is necessary because the Serverless team's official repo (https://github.com/serverless/github-action) doesn't seem very well maintained, and it's not a very complex operation anyway.

name: Deploy `main` Branch

on:
  push:
    branches:
      - main
    paths:
      - apps/**
      - lib/**
      - .github/workflows/**
jobs:
  deploy:
    name: deploy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install pnpm
        uses: pnpm/action-setup@v2
        with:
          version: 8
      - uses: actions/setup-node@v3
        with:
          node-version: 18
          cache: pnpm
      - run: pnpm i
      - run: pnpm i -g serverless
      - run: sls config credentials --provider aws --key ${{ secrets.AWS_ACCESS_KEY_ID }} --secret ${{ secrets.AWS_SECRET_ACCESS_KEY }}
      - run: sls deploy --stage prod
        working-directory: apps/core/server
        env:
          DATABASE_URL: ${{ secrets.DATABASE_URL }}