Document how to use jenkins/ssh-agent
Docker image
#966
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It took me a huge amount of time to figure out how to get the Connect with SSH connection method to work, until I figured out that I needed to set the username to
jenkins
in order for the SSH key to be properly injected. This was particularly frustrating since I did not need to set the username for any of the other connection methods. This a shortcoming indocker-plugin
that would presumably be addressed by #763. Until then, at least document the status quo to make the situation less frustrating for newcomers.