(doc): Update docker-compose.yml and conduwuit-example.toml

[bumpsoo]

The server cannot start without a registration token when registration is configured

[girlbossceo]

Example config documentation changes need to be made in src/core/config/mod.rs and the example config needs to be regenerated via building conduwuit. See the top of this file.

### THIS FILE IS GENERATED. CHANGES/CONTRIBUTIONS IN THE REPO WILL BE
### OVERWRITTEN!
###
### You should rename this file before configuring your server. Changes to
### documentation and defaults can be contributed in source code at
### src/core/config/mod.rs. This file is generated when building.

Please make this documentation change in src/core/config/mod.rs and regenerate the example config file.

[bumpsoo]

I didn't know the file was generated. I fixed it

[bumpsoo]

Could you run it one more time?

[bumpsoo]

I didn't understand the test at first. It's just a git diff after building. I should have read the engage file more carefully.
The reason for the failure was that I tested the example locally after committing without cleaning the built files.
Since the generated example file contains tls.global and global.well_known twice, I edited the file before committing.

I only used the following command:
direnv exec . engage just tests example-config
It depends on cargo/default.

The example file is the same as the result of cargo/all, so it should be fine.

[bumpsoo]

Now the result looks similar to what I got on my laptop. Based on the output, it seems that cargo/default was executed first, and cargo/all was waiting. In the previous result, cargo/all was executed first, which is correct. It seems that the example file generated by cargo/default and cargo/all is different.

[girlbossceo]

I'll just fix your PR when I have time in the next few days.

[girlbossceo]

Made a mistake when rebasing/force-pushing to your PR; I've merged this in 9dcf289