diff --git a/config.json b/config.json
index 218eb17..7cf2b77 100644
--- a/config.json
+++ b/config.json
@@ -98,6 +98,19 @@
         "type": "host"
     },
     "propagatedMount": "/var/lib/docker-volumes",
+    "mounts": [
+        {
+          "name": "cache",
+          "description": "Directory to use for disk cache optionally enabled using DISKCACHE_PATH",
+          "destination": "/var/cache/objfs",
+          "source": "/var/cache/objfs",
+          "settable": [
+            "source",
+            "destination"
+          ],
+          "type": "bind"
+        }
+    ],
     "linux": {
         "capabilities": [
             "CAP_SYS_ADMIN"