po3 from local zip file with cleanroom loader (#4366)

examples/auto-curseforge/po3/compose-pack-from-zip-wtih-cleanroom.yml

@@ -0,0 +1,27 @@
+services:
+  minecraft:
+    image: itzg/minecraft-server:java25
+    tty: true
+    stdin_open: true
+    ports:
+      - "25565:25565"
+    environment:
+      EULA: true
+      MOD_PLATFORM: AUTO_CURSEFORGE
+      CF_SLUG: "custom"
+      CF_MODPACK_ZIP: "/downloads/modpacks/PO3-3.5.1.zip"
+      APPLY_CLEANROOM: true
+      # Mod needed for this pack
+      CF_FORCE_INCLUDE_MODS: hwyla
+      MEMORY: 8G
+      OVERRIDE_SERVER_PROPERTIES: true
+      LEVEL_TYPE: botania-skyblock
+    volumes:
+      - ./downloads:/downloads
+      - ./data:/data
+      # Uses managed volume by default
+      #- mc-data:/data    
+
+# Managed volume by default
+#volumes:
+  #mc-data: