Enable running shared-components locally

[clottman]

• adds dotenv so people working on this locally can set the port value in .env

• replaces hard-coded app path with path.resolve(__dirname, ... so that the app can run on local machines as well as on Glitch

• To test this locally while Glitch is down, comment out the glitchButton code in public/index.html.

• Will create a remix with this branch on it when the site's back up.

[ehmorris]

I just checked out this branch and ran the server locally and it worked!

To make the process easier for people checking out for the first time, I'd suggest adding a small section to the readme with the correct command to run. I'd also add a .sample.env file with the proper key to set the port, and a comment about it being optional, since locally you don't have the advantage of a special .env like you would on Glitch. I was unsure of the key name.

[clottman]

Updated readme, and got this running on glitch at ~boundless-olive to make sure it didn't break anything.

[ehmorris]

Nice! I might call this "Running Locally" but I don't have a strong preference.

[ttseng]

awesome! it's working for me.

[keithk]

🚀 PR was released in v0.19.0 🚀