[Feature] Allow for the secret config to point to forwarding.secret file

[ChristopherHaws]

I like to keep my config files in source control. Currently I have to keep FabricProxy-Lite.toml in my .gitignore file because it contains the private key. If I could configure FabricProxy-Lite to read the secret directly from a file, I could then point it to the forwarding.secret so the config file doesn't contain any secret data.

Thanks! :)

[james58899]

Currently supports setting secrets through environment variables FABRIC_PROXY_SECRET.

[ryleu]

I use velocity in docker and I'd love to be able to add that one file to both containers without fussing with ansible.

[NorskNoobing]

@ryleu If you're using itzg/minecraft-server for the server image and itzg/mc-proxy for Velocity, it's already possible.

Both of these images allow for interpolation in the config files in order to replace env-vars with values.

I use this in conjunction with the optional config mount-point, and the following env-vars in the docker-compose.yml and .env files. Note! the forwarding secret requires the double quotes around the value.:

environment:
  - REPLACE_ENV_DURING_SYNC=true
  - REPLACE_ENV_VARIABLES=true
  - CFG_FABRIC_PROXY_FORWARDING_SECRET="$VELOCITY_FORWARDING_SECRET"
  - CFG_FABRIC_PROXY_HACK_EARLY_SEND=true
  - CFG_FABRIC_PROXY_HACK_MESSAGE_CHAIN=true

Then in the FabricProxy-Lite.toml file which is inside a persistent volume to the containers /config dir, you'd set the variables like so:

hackOnlineMode = true
hackEarlySend = ${CFG_FABRIC_PROXY_HACK_EARLY_SEND}
hackMessageChain = ${CFG_FABRIC_PROXY_HACK_MESSAGE_CHAIN}
disconnectMessage = "This server requires you to connect with Velocity."
secret = ${CFG_FABRIC_PROXY_FORWARDING_SECRET}

These images are pretty neat, because they allow for automation like this, and e.g. installing mods/plugins automatically from CurseForge, Modrinth, or any site with a direct .jar download link.

Documentation:

• itzg/minecraft-server - Modifying config files
• itzg/minecraft-server - Optional plugins, mods, and config attach points
• itzg/mc-proxy - Volumes
• itzg/mc-proxy - Replacing variables inside configs