Adding public keys to GitHub

To use the SSH keys to connect MettleCI Workbench with your Github service you'll need to provide GitHub with your public key.

Process

Select the repository to which you wish to add your SSH and click the Settings option.
From the left-hand navigation pane select Deploy keys.
In the top right select Add deploy key.
Give the key a descriptive Title (including a reference to the related DataStage Engine host and its use for MettleCI Workbench might be a good idea)
On the DataStage Engine where Workbench is installed cat UNIX or type WINDOWS your public key file (typically workbench.key.pub) and copy it to your clipboard (⌘-C/Ctrl-C).
Paste the contents of the public key into the Key field.
If this is a repository to which Workbench should be able to write (e.g. a repository to which it will commit DataStage assets) then check the Allow write access option.
Click Add key.