[Feature] Server & username & password automatic detection

[mahnunchik]

Problem/Motivation

It would be really great to have automatic detection of server & username & password for local mosquitto installation.

Expected behavior

Like in Zigbee2MQTT:

https://github.com/zigbee2mqtt/hassio-zigbee2mqtt/blob/6d5d0e5fd3b37c840a3b218814905914fa3c1e5f/common/rootfs/docker-entrypoint.sh#L89-L100

Actual behavior

Manual configuration

[sinclairpaul]

As the config is managed through a manually created file, not sure how this would be possible?

[mahnunchik]

@sinclairpaul You may find how it is implemented in Zigbee2MQTT https://github.com/zigbee2mqtt/hassio-zigbee2mqtt/blob/6d5d0e5fd3b37c840a3b218814905914fa3c1e5f/common/rootfs/docker-entrypoint.sh#L89-L100

[sinclairpaul]

Thanks I'm aware, and it's passed through Environment Variables, this application has a file managed by the user.

[mahnunchik]

Yes, and if server/username/password not specified by the user then it consumed from the env vars. It is super helpful (end easy to use) for simple setup like mosquitto, mqtt and mqtt-io on the same machine.

[sinclairpaul]

Which is due to the fact that the application supports configuration via Environment Variables, this doesn't. You can look at the MQTT IO documentation for reference which this addon installs.