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Forge

A Forge server can be automatically downloaded, upgraded, and run by setting the environment variable TYPE to "FORGE".

Example

docker run -e TYPE=FORGE ...

or in a compose file 

    environment:
      TYPE: FORGE

The overall version is specified by VERSION, as described in the section above and provides the same benefits of upgrading as new versions are released. By default, the recommended version of Forge for that Minecraft version will be selected. The latest version can be selected instead by setting the environment variable FORGE_VERSION to "latest". You can also choose a specific Forge version by setting FORGE_VERSION with that version, such as "14.23.5.2854".

Example

docker run -e TYPE=FORGE -e VERSION=1.12.2 -e FORGE_VERSION=14.23.5.2854 ...

or in a compose file 

    environment:
      TYPE: FORGE
      VERSION: "1.12.2"
      FORGE_VERSION: "14.23.5.2854"

To use a pre-downloaded Forge installer, place it in a location mounted into the container and specify the container path with FORGE_INSTALLER. To download a Forge installer from a custom location, such as your own file repository, specify the URL with FORGE_INSTALLER_URL.

In both of the cases above, there is no need for the VERSION or FORGE_VERSION variables.

Note

If an error occurred while installing Forge, it might be possible to resolve by temporarily setting FORGE_FORCE_REINSTALL to "true". Be sure to remove that variable after successfully starting the server.

Alternatives

NeoForge

Support for NeoForge is also provided. A NeoForge server can be automatically managed by setting TYPE to "NEOFORGE". VERSION specifies the Minecraft version and NEOFORGE_VERSION can be set to select a specific sub-version. By default, the latest NeoForge version available for the requested Minecraft version will be used.

Example

docker run -e TYPE=NEOFORGE -e VERSION=1.20.1 -e NEOFORGE_VERSION=47.1.79 ...

or in a compose file 

    environment:
      TYPE: NEOFORGE
      VERSION: "1.20.1"
      NEOFORGE_VERSION: "47.1.79"