support: Error deploying to the external repository

Checklist

• I am using the latest version of this action.
• I have read the latest README and followed the instructions.
• I have read the latest GitHub Actions official documentation and learned the basic spec and concepts.

Describe your question

Hi,

I am trying to deploy doxygen documentation generated in repository A to my github pages repository B.

I have tried to follow the instructions provided in the README, which are:

• generate pair of private/public rsa keys
• add private key to the repository A (the one with Actions) to the secrets with a name ACTIONS_DEPLOY_KEY
• add public key to the deploy keys of repository B (pages)
• add the action step as:

            - name: Deploy website
              uses: peaceiris/actions-gh-pages@v3
              with:
                  deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
                  external_repository: dudarboh/dudarboh.github.io
                  publish_branch: gh-pages
                  publish_dir: ./doc/doxygen_api/html

and I stumble on the error: Error: Action failed with "The process '/usr/bin/ssh-add' failed with exit code 1"

Could you give me a hint if I am doing something wrong?

cheers

Relevant links

Public repository: https://github.com/dudarboh/LCIO/tree/test-doc
External repository for website: https://github.com/dudarboh/dudarboh.github.io
YAML config: https://github.com/dudarboh/LCIO/blob/test-doc/.github/workflows/docs.yml
YAML workflow: https://github.com/dudarboh/LCIO/runs/4563029468?check_suite_focus=true

Relevant log output

Run peaceiris/actions-gh-pages@v3
[INFO] Usage https://github.com/peaceiris/actions-gh-pages#readme
Dump inputs
Setup auth token
  [INFO] setup SSH deploy key
  /usr/bin/chmod 700 /home/runner/.ssh
  [INFO] wrote /home/runner/.ssh/known_hosts
  /usr/bin/chmod 600 /home/runner/.ssh/known_hosts
  [INFO] wrote /home/runner/.ssh/github
  /usr/bin/chmod 600 /home/runner/.ssh/github
  [INFO] wrote /home/runner/.ssh/config
  /usr/bin/chmod 600 /home/runner/.ssh/config
  /usr/bin/ssh-add /home/runner/.ssh/github
  Error loading key "/home/runner/.ssh/github": invalid format
  Error: Action failed with "The process '/usr/bin/ssh-add' failed with exit code 1"

Additional context.

Maybe you will have any immediate idea what could cause this?

Thank you!

[dudarboh]

It works.

Copying private key’s -----BEGIN RSA PRIVATE KEY----- and -----END RSA PRIVATE KEY----- lines seems important…

Sorry for this newbie issue 😃

cheers

[github-actions[bot]]

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