SSH authentication agent does not automatically start when using it from a remote server. This results in the following error message:
$ git pull
Permission denied (publickey).
fatal: The remote end hung up unexpectedly
$ ssh-add ~/my-ssh-key.pem
Could not open a connection to your authentication agent.
To fix it requires manually starting ssh-agent:
$ eval `ssh-agent -s`
Agent pid 13442
$ ssh-add ~/my-ssh-key.pem
Identity added: /home/user/my-ssh-key.pem (/home/user/my-ssh-key.pem)
$ git pull
Thanks, this works with starting ssh-agent within Github Actions as well.