Thanks for your time and wish you best of luck about your health.
Regarding installation; Creating private key is very complicated, could you please share your gmail ID so that I could share my VM instance with you?
I refreshed it with static IP, clean installation of Ubuntu 16.04 LTS Minimal and created Swap Memory, set hostname of machine.
Rest I have cleaned the installation of docker/java/postgres.
I will highly appreciate if you could help in setting up server/
Waiting for your reply with gmail ID.