Add a custom folder which, if a config file is present, it overwrites one shipped with the modpack. Particularly useful for overriding FTB Backup configuration.

Will make easier to tweak. Fix description on pc.

Rather than having different Docker tags for different pack versions, it would make more sense to always get the latest version unless an environment variable specifies otherwise.

This is based on my understanding that Docker tags should be used for large changes that affect the base image, while the version change is really just a single command change.

Rather than having to hard-code the latest version, it would make more sense to get it from the CreeperHost API.

Sending the SIGTERM to the .sh rather than java?

Right now this variable is hard-coded, which will break when #7 is fixed.

We don't really need the Java build tools, do we? Removing them should shrink things down a fair bit.

Allow for user-customizable RAM utilization by environment variables

Create a custom folder which mods inserted into will be injected into the mods folder of the instance at start.

Also, consider optimised launch arguments.