See this
https://support.cloud.engineyard.com/hc/en-us/articles/205407488-Obtain-and-Install-SSL-Certificates-for-Applications
search that page for 'nginx'
https://support.cloud.engineyard.com/hc/en-us/articles/205407488-Obtain-and-Install-SSL-Certificates-for-Applications
search that page for 'nginx'