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There is an open source product called OwnTracks that has been around for many years and is somewhat easy to setup. But to make a single server work for multiple friend groups and my family, some modifications need to be made. My mom doesn't need to know where my friends are, and separate friend groups don't need to see each other's locations. OwnTracks defaults let everyone on the server see everyone else's location, though. Luckily, I have come up with a fairly simple workaround.
To start, I'm hosting the Mosquitto MQTT broker and Node-Red on a free Oracle Cloud instance using Docker and Caddy as a reverse proxy. My docker-compose.yml file looks like this:
To start, I'm hosting the Mosquitto MQTT broker and Node-Red on a free Oracle Cloud instance using Docker and Caddy as a reverse proxy. My docker-compose.yml file looks like this: