Back up a Fly.io Postgres database to S3 using GitHub Actions

backup.yml

name: Back up database
run-name: Task
on:
  schedule:
    - cron: '0 4 * * *'
  workflow_dispatch:
jobs:
  backup:
    runs-on: ubuntu-latest
    env:
      FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
      PGUSER: postgres
      PGPASSWORD: ${{ secrets.PGPASSWORD }}
      PGDATABASE: your_database_name
      PGHOST: localhost
      PGPORT: 5555

    steps:
      - uses: s3-actions/s3cmd@v1.2.0
        with:
          provider: aws
          region: eu-central-1
          access_key: ${{ secrets.S3_ACCESS_KEY }}
          secret_key: ${{ secrets.S3_SECRET_KEY }}
      - uses: superfly/flyctl-actions/setup-flyctl@master
      - name: Set filename
        run: echo "filename=db-$(date -u +"%Y-%m-%d-%H%M%S").dump" >> $GITHUB_ENV
      - name: Dump database and upload to S3
        run: |
         flyctl proxy 5555:5432 -a your-fly-db-app-name &
         sleep 3
         echo Dumping ...
         pg_dump -Fc -f ${{ env.filename }}
         ls
         s3cmd put --acl-private ${{ env.filename }} s3://your-s3-bucket/your-path/${{ env.filename }}