Unable to setup the .gitlab-ci.yml file

Hii Gitlab team,

I've become a huge of your work and am trying to shift my projects to GitLab but having a few troubles here and there.

Right now, I need a bit of help with setting up the .gitlab-ci.yml file for my Gitlab Pages. The template I'm using is https://github.com/sergiokopplin/indigo - I'm unable to effectively move over the configs from Travis .

This is my Gitlab repo - https://gitlab.com/abhi18av/abhi18av.gitlab.io

I've tried almost everything I could think of, any help would be greatly appreciated, Thanks!

P.S. I know about the official Jekyll Pages repo and the Documentation for gitlab-ci but, I do see a space for improvement along the lines of templates.