Help setting up a production grade Concourse CI and connect to a server using SSH private key -- 2

Hello,

I need help setting up a production grade Concourse CI. Just the command lines and the config.

Also need to read the host id_rsa and use it as private key to for concourse-ssh-resource.

Requirements :
• Nginx
• Percona PostgreSQL 13.3
• Concourse CI Binaries (no docker) : https://github.com/concourse/concourse/releases/download/v7.5.0/concourse-7.5.0-linux-amd64.tgz
• Alpha SSL Wildcard certificate.
• Improved configuration

Thanks