Thanks for your help in advance.
I have deployed a NodeJs app in Pivotal Cloud Foundry (dev.appname.cfapps.io). I have a Load Balancer running on Digital Ocean and Let's encrypt certs are configured here for my custom domain (appname.com). So only the API calls are sent to NodeJS app through Load Balancer, website and other subdomain visits are redirected to another hosting provider.
Now I configured NodeJs app to link to my custom domain (dev.api.appname.com) and configured proxy pass from Digital Ocean to dev.appname.cfapps.io. Now if I open dev.api.appname.com in a browser, the browser is showing unsecured since the certificates are different from DigitalOcean and PCF app.
I used SSL app in PCF marketplace to upload certs and it worked fine. But it costs $20 per month. Can any one suggest how I can upload Let's Encrypt certificates to PCF app my self without using external plugins?