Problems with installing discourse on heroku(mostly a redis error)

I am using a 32 bit laptop at the moment(and for another 2 months). I cannot install docker on my ubuntu system. I might need the docker set up for customizing the front end.

I shifted to heroku because I will be able to customize the front end from my laptop. I have a little experience in Rails.

It is probably a bad idea. Can you make a suggestion on this situation?