Github action to deploy all serverless functions in a folder

deploy_functions.yml

name: Deploy serverless functions
on:
  push:
    paths:
      - "functions/**"
    branches:
      - "main"
jobs:
  list-functions:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v3
      - id: set-matrix
        run: echo "matrix=$(ls functions | jq -R -s -c 'split("\n")[:-1]')" >> $GITHUB_OUTPUT
  deploy:
    needs: list-functions
    runs-on: ubuntu-latest
    strategy:
      matrix:
        function: ${{ fromJson(needs.list-functions.outputs.matrix) }}
    steps:
      - uses: actions/checkout@v3
      - name: Setup node
        uses: actions/setup-node@v3
        with:
          node-version: "18"
      - name: Install yq
        run: |
          sudo snap install yq
      - name: Setup serverless
        run: |
          npm i -g serverless
      - name: Install plugins
        working-directory: functions/${{ matrix.function }}
        run: |
          yq '.plugins[]' serverless.yml | xargs -L1 serverless plugin install -n
      - name: Deploy
        run: serverless deploy -s prod
        working-directory: functions/${{ matrix.function }}
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}