Switch from bind mounts to named docker volumes

.gitignore

@@ -4,51 +4,3 @@
 # Ignore environment variable files containing secrets.
 /.env
 
-# Docker volumes
-/velocity/data/**
-!/velocity/data/.keep
-
-/luckperms/data/**
-!/luckperms/data/.keep
-
-/schematics/**
-
-/paper/data/**
-!/paper/data/bukkit.yml
-!/paper/data/spigot.yml
-!/paper/data/commands.yml
-!/paper/data/plugins
-!/paper/data/plugins/WorldEdit
-!/paper/data/plugins/WorldEdit/schematics/
-!/paper/data/plugins/WorldEdit/schematics/.keep
-!/paper/data/bluemap
-!/paper/data/bluemap/web
-!/paper/data/bluemap/web/maps
-!/paper/data/bluemap/web/maps/.keep
-
-/fabric/data/**
-!/fabric/data/config
-!/fabric/data/config/worldedit
-!/fabric/data/config/worldedit/schematics
-!/fabric/data/config/worldedit/schematics/.keep
-!/fabric/data/bluemap
-!/fabric/data/bluemap/web
-!/fabric/data/bluemap/web/maps
-!/fabric/data/bluemap/web/maps/.keep
-
-/bluemap/data/**
-!/bluemap/data/.keep
-
-/bluemap/maps/**
-!/bluemap/maps/.keep
-
-/bluemap/web/**
-!/bluemap/web/.keep
-
-# Backups
-/backups/**
-!/backups/.keep
-
-# Java binaries
-/paper/plugins/*.jar
-