Working with mods and plugins¶
Mod platforms¶
By far the easiest way to work with mod and plugins, especially large numbers of them, is to utilize modpacks with one of the supported mod platforms.
The following are some supported mod platforms:
Download automation¶
On the left, there are sections describing some download automation options.
Mods vs Plugins¶
The terms "mods" and "plugins" can be quite confusing. Generally, the rule of thumb is that "mods" are used by the types that run client side to modify rendering, add new blocks, and add behaviors server, such as Forge and Fabric. "Plugins" are used by the types that only run on servers to add behaviors, commands, etc such as Paper (which derives from Bukkit/Spigot). There are also some types that are hybrids, such as Magma, that use both "mods" and "plugins"
Optional plugins, mods, and config attach points¶
There are optional volume paths that can be attached to supply content to be copied into the data area:
/plugins
- content in this directory is synchronized into
/data/plugins
for server types that use plugins, as described above. For special cases, the source can be changed by settingCOPY_PLUGINS_SRC
and destination by settingCOPY_PLUGINS_DEST
. /mods
- content in this directory is synchronized into
/data/mods
for server types that use mods, as described above. For special cases, the source can be changed by settingCOPY_MODS_SRC
and destination by settingCOPY_MODS_DEST
. /config
- contents are synchronized into
/data/config
by default, but can be changed withCOPY_CONFIG_DEST
. For example,-v ./config:/config -e COPY_CONFIG_DEST=/data
will allow you to copy over files likebukkit.yml
and so on directly into the server directory. The source can be changed by settingCOPY_CONFIG_SRC
. SetSYNC_SKIP_NEWER_IN_DESTINATION=false
if you want files from/config
to take precedence over newer files in/data/config
.
By default, the environment variable processing is performed on synchronized files that match the expected suffixes in REPLACE_ENV_SUFFIXES
(by default "yml,yaml,txt,cfg,conf,properties,hjson,json,tml,toml") and are not excluded by REPLACE_ENV_VARIABLES_EXCLUDES
and REPLACE_ENV_VARIABLES_EXCLUDE_PATHS
. This processing can be disabled by setting REPLACE_ENV_DURING_SYNC
to false
.
If you want old mods/plugins to be removed before the content is brought over from those attach points, then add -e REMOVE_OLD_MODS=TRUE
. You can fine tune the removal process by specifying the REMOVE_OLD_MODS_INCLUDE
and REMOVE_OLD_MODS_EXCLUDE
variables, which are comma separated lists of file glob patterns. If a directory is excluded, then it and all of its contents are excluded. By default, only jars are removed.
You can also specify the REMOVE_OLD_MODS_DEPTH
(default is 16) variable to only delete files up to a certain level.
For example: -e REMOVE_OLD_MODS=TRUE -e REMOVE_OLD_MODS_INCLUDE="*.jar" -e REMOVE_OLD_MODS_DEPTH=1
will remove all old jar files that are directly inside the plugins/
or mods/
directory.
These paths work well if you want to have a common set of modules in a separate location, but still have multiple worlds with different server requirements in either persistent volumes or a downloadable archive.
For more flexibility with mods/plugins preparation, you can declare other directories, files, and URLs to use in the MODS
/ PLUGINS
variables.
Zip file modpack¶
Like the WORLD
option above, you can specify the URL or container path of a "mod pack" to download and install into mods
for Forge/Fabric or plugins
for Bukkit/Spigot. To use this option pass the environment variable MODPACK
, such as
Note
The referenced URL/file must be a zip file with one or more jar files at the
top level of the zip archive. Make sure the jars are compatible with the
particular TYPE
of server you are running.
Generic pack files¶
To install all the server content (jars, mods, plugins, configs, etc.) from a zip or tgz file, then set GENERIC_PACK
to the container path or URL of the archive file. This can also be used to apply a CurseForge modpack that is missing a server start script and/or Forge installer.
If multiple generic packs need to be applied together, set GENERIC_PACKS
instead, with a comma separated list of archive file paths and/or URLs to files.
To avoid repetition, each entry will be prefixed by the value of GENERIC_PACKS_PREFIX
and suffixed by the value of GENERIC_PACKS_SUFFIX
, both of which are optional. For example, the following variables
GENERIC_PACKS=configs-v9.0.1,mods-v4.3.6
GENERIC_PACKS_PREFIX=https://cdn.example.org/
GENERIC_PACKS_SUFFIX=.zip
would expand to https://cdn.example.org/configs-v9.0.1.zip,https://cdn.example.org/mods-v4.3.6.zip
.
If applying large generic packs, the update can be time-consuming. To skip the update set SKIP_GENERIC_PACK_UPDATE_CHECK
to "true". Conversely, the generic pack(s) can be forced to be applied by setting FORCE_GENERIC_PACK_UPDATE
to "true".
The most time-consuming portion of the generic pack update is generating and comparing the SHA1 checksum. To skip the checksum generation, set SKIP_GENERIC_PACK_CHECKSUM
to "true".
Mods/plugins list¶
You may also download or copy over individual mods/plugins using the MODS
or PLUGINS
environment variables. Both are a comma or newline delimited list of
- URL of a jar file
- container path to a jar file
- container path to a directory containing jar files
docker run -d -e MODS=https://www.example.com/mods/mod1.jar,/plugins/common,/plugins/special/mod2.jar ...
The newline delimiting allows for compose file usage like:
PLUGINS: |
https://download.geysermc.org/v2/projects/geyser/versions/latest/builds/latest/downloads/spigot
https://download.geysermc.org/v2/projects/floodgate/versions/latest/builds/latest/downloads/spigot
Mod/Plugin URL Listing File¶
As an alternative to MODS
/PLUGINS
, the variable MODS_FILE
or PLUGINS_FILE
can be set with the container path or URL of a text file listing a mod/plugin URLs on each line. For example, the following
-e MODS_FILE=/extras/mods.txt
would load from a file mounted into the container at /extras/mods.txt
. That file might look like:
https://edge.forgecdn.net/files/2965/233/Bookshelf-1.15.2-5.6.40.jar
https://edge.forgecdn.net/files/2926/27/ProgressiveBosses-2.1.5-mc1.15.2.jar
# This and next line are ignored
#https://edge.forgecdn.net/files/3248/905/goblintraders-1.3.1-1.15.2.jar
https://edge.forgecdn.net/files/3272/32/jei-1.15.2-6.0.3.16.jar
https://edge.forgecdn.net/files/2871/647/ToastControl-1.15.2-3.0.1.jar
Note
Blank lines and lines that start with a #
will be ignored
This compose file shows another example of using this feature.
Remove old mods/plugins¶
When the MODPACK
option above is specified you can also instruct script to delete old mods/plugins prior to installing new ones. This behaviour is desirable in case you want to upgrade mods/plugins from downloaded zip file.
To use this option pass the environment variable REMOVE_OLD_MODS=TRUE
, such as
Danger
All content of the mods
or plugins
directory will be deleted before unpacking new content from the MODPACK or MODS.