No suport of env vars in main action

[tobalsan]

Codex doesn't have access to env vars defined either in the step or job level, e.g.:

- name: Run Codex to assess the plan  
  id: codex_assess  
  uses: openai/codex-action@main  
  env:  
    GH_TOKEN: ${{ steps.generate_token.outputs.token }} 

If my prompt instructs to use gh, Codex will fail because:

bash -lc 'gh issue view 47 --json number,title,body,state,assignees,author,labels,comments' in /home/runner/work/my/repo exited 4 in 2.24s:
gh: To use GitHub CLI in a GitHub Actions workflow, set the GH_TOKEN environment variable. Example:
  env:
    GH_TOKEN: ${{ github.token }}

[bolinfest]

Hmm, for this to work, I think we would have to have a special env input to the action so the above would look like:

- name: Run Codex to assess the plan  
  id: codex_assess  
  uses: openai/codex-action@main  
  with:
    env:  
      GH_TOKEN: ${{ steps.generate_token.outputs.token }} 

Though as a workaround, FYI, you can run openai/codex-action@v1 once with openai-api-key and no prompt just to start the proxy and then you can call codex from an ordinary bash step:

codex-action/README.md

Line 152 in 3dafd12

- Once `openai/codex-action` is run once with `openai-api-key`, you can also call `codex` from subsequent scripts in your job. (You can omit `prompt` and `prompt-file` from the action in this case.)