Your private key is checked-in in github. Since this is publicly available anybody can login to your VMs. I would suggest you to remove the private key from the github. For peer reviewers and TA, you can ask them for their public keys and add it to your systems so that only they can login to your machines.
Your private key is checked-in in github. Since this is publicly available anybody can login to your VMs. I would suggest you to remove the private key from the github. For peer reviewers and TA, you can ask them for their public keys and add it to your systems so that only they can login to your machines.