To set custom environment variables, you need to specify the variables in the workflow file. You can define environment variables for a step, job, or entire workflow using the [`jobs.<job_id>.steps[*].env`](/github/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#jobsjob_idstepsenv), [`jobs.<job_id>.env`](/github/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#jobsjob_idenv), and [`env`](/github/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#env) keywords. For more information, see "[Workflow syntax for {% data variables.product.prodname_dotcom %}](/articles/workflow-syntax-for-github-actions/#jobsjob_idstepsenv)."
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