I want to setup SSL certificates provided by Godaddy on digital ocean's droplet

I have redash server provided by digital ocean deployed via docker composer. I want to set up SSL certificates provide by GoDaddy. I am using Setting up HTTPS with LetsEncrypt for Redash Docker Deployment · GitHub this document as a reference and I’m Skipping step 8 to generate letsencrypt SSL certificates because I want to use my own certificates. But I’m unable to set up, any help?

There’s nothing particular about Redash in this regard. You can follow GoDaddy’s instructions here to configure the SSL with nginx. Redash uses a stock nginx container definition. The only special instruction is step 6 in the link you provided, which maps a local directory on your VM to a volume that the nginx container can read.