Example checking if an output contains or not a specific value

10-conditional-check-output-contains.yml

name: Conditional Workflow

on:
  workflow_dispatch:

jobs:

  job1:
      runs-on: ubuntu-latest
      steps:
          - id: step1
            run: echo "::set-output name=test::hello"
          - name: step 2
            if: contains(steps.step1.outputs.test, 'hello')
            run: echo 'is executed'
          - name: step 3
            if: contains(steps.step1.outputs.test, 'not_hello')
            run: echo 'not executed'