Heroku Setup

To install and run

Install git on Terminal
Sign up for a free Heroku account
Install Heroku CLI on your Terminal
cd to the location where you want to put the TM web app folder
git clone https://github.com/bafolts/terraforming-mars.git
cd terraforming-mars
heroku login
Enter your Heroku credentials
heroku create [app name] ([app name] is whatever you want to call your server. The server will eventually be [app name].herokuapp.com, and the git repo will be https://git.heroku.com/[app name].git.)
git push heroku master

(If you want to push from another branch, use branch:master ref)

To update

cd to the inside of terraforming-mars folder
git pull
git push heroku master

About https

By default Heroku's apps use the http protocol, and that's probably not good if you plan to share the link. Follow the instructions at on README.md to set up https.

To set up a database for game seeds

The free Heroku server falls asleep after 20-30 minutes of inactivity. You can set up a database to contain seeds from previously played games. Without setting this up, the seeds will be wiped after Heroku server goes to sleep. This instruction is from 13and3.

Go to your Heroku dashboard
Click on your TM server app
Configure Add-ons
In the add-ons search box, type "Heroku Postgres" and select it. Plan name: [Hobby Dev - Free]. Provision to add it to the server.
Go to Settings
Reveal Config Vars
Copy the text postgres://... from the text field next to DATABASE_URL to the one below next to POSTGRES_HOST.