Yes, you can add anything to your modpack.
Two ways of adding content to the modpack.
-
To re-use already existing files on server use
syncedFilesread more in config. As an example with default config it creates modpack containing every mod (file ending with .jar) from server~/mods/folder. -
To add more files to modpack use separate directory
~/automodpack/host-modpack/main/. For example to add more mods create foldermodsand place there mods so that will be~/automodpack/host-modpack/main/mods/your-mod.jar. Or to add resourcepacks analogically create folderresourcepacksand place there resourcepacks so that will be~/automodpack/host-modpack/main/resourcepacks/your-resourcepack.zip.
Heads up!
Do not place in the modpack cache files, like connector's .connector directory, its not supposed to be provided within modpack and it break seamless/reboot-less updates.
Both of these methods translate to the ~/.minecraft/ on client side (root directory of minecraft instance).
Remember to regenerate the modpack using /automodpack generate (see commands)