github actions: using variables in global env section

Question

Is it possible to use variables inside global env sections in github workflows? Something like following code snippet

env:
  isqa: ""
  local_tag: "${{env.isqa}}latest"
  project: "important"
  aws_taskdef: "project-${project}-something"

chenrui · Accepted Answer · 2021-11-16 00:37:49Z

12

You cannot put these env references on the same level, but you can specify the to-be-referenced values on the workflow or job level, and reference them in the step level. It would be something like this

jobs:
  test:
    runs-on: ubuntu-latest
    env:
      IS_QA: "qa"
      PROJECT: "important"
    steps:
      - run:
          echo ${{env.IS_QA}}
          echo ${{env.LOCAL_TAG}}
          echo ${{env.PROJECT}}
          echo ${{env.AWS_TASKDEF}}
        env:
          LOCAL_TAG: "${{env.IS_QA}}-latest"
          AWS_TASKDEF: "project-${{env.PROJECT}}-something"

You can see my testing in here, https://github.com/chenrui333/github-action-test/blob/main/.github/workflows/env-test.yaml

answered Nov 16, 2021 at 0:37

chenrui

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3 Comments

Baked Inhalf Over a year ago

runs-on: doesn't support env so for example runs-on: ${{env.OS_VERSION}} will not work

Costas Over a year ago

Based on this doc page runs-on: does support env: docs.github.com/en/actions/learn-github-actions/…

froblesmartin Over a year ago

At least on my tests, it only works with env at the step level and not the job level.

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