Update hot reloading instructions

[nichhk]

Fixes #1218

• Up to date with dev branch
• Branch name follows guidelines
• All PR Status checks are successful
• Peer reviewed and approved

Any questions? See the getting started guide

[joshuayhwu]

Unfortuately gunicorn is not compatible with windows system, so I can't test if this works or not. I looked at the combination with hupper and waitress which essentially does the samething, but I'm fine with docker build solution. Perhaps someone else with a linux system could test this and confirm if this works?

References: Hupper, waitress-serve, gunicorn windows incompatible

[nichhk]

Ah, thanks for the heads up. I realized we can still use Docker; we just need to provide a custom command that runs gunicorn with "--reload". This should work for both unix and windows devs. PTAL.

[joshuayhwu]

Thanks Nich! This works like a charm! Just in case other people also have windows system and faces error with the dash run line, simply put the quotation over the entire host path to container path, i.e.

docker run -p 5500:5500 -v "$(pwd):/app" -e PRELOAD=False la311data/dash-poc gunicorn --bind 0.0.0.0:5500 --timeout 300 --workers 2 index:server --reload

[nichhk]

Thanks for testing it out! I updated my changes with your tip. It works on my mac as well.