Creating environment variables in Github Actions on the fly.yaml

name: Create Unstable Release

on:
  push:

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:

      - name: Checkout GitHub Action
        uses: actions/checkout@main

      - name: Get current date
        id: date
        run: echo "::set-output name=date::$(date +'%Y-%m-%d-%s')"
        
      - name: Test new GitHub Environment variable
        run: |
          echo ${{ steps.date.outputs.date }}