Multiple SSH credentials gitlab and github

 https://gist.github.com/Sotatek-NuiTran/a20d6827d874ca5f5b7b01e1a6d8fd01

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent

how to insert to ssh agent and check list of keys

 eval `ssh-agent -s`

ssh-add ~/.ssh/id_rsa

ssh-add -l