diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..4ea4b57
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,3 @@
+FROM jacobalberty/unifi
+
+HEALTHCHECK NONE
diff --git a/README.md b/README.md
index 043a56a..314defd 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,18 @@
 # unifi-docker
-fork of https://github.com/jacobalberty/unifi-docker without health check
+
+Fork of https://github.com/jacobalberty/unifi-docker without health check
+
+The HEALTHCHECK causes docker to write to disk every 30 seconds which prevents disk hibernation on NAS.
+
+Example log in file `config.v2.json`:
+
+    "Health": {
+      "Status": "healthy",
+      "FailingStreak": 0,
+      "Log": [
+        {
+          "Start": "2019-10-04T16:42:07.855025309+02:00",
+          "End": "2019-10-04T16:42:08.036342122+02:00",
+          "ExitCode": 0,
+          "Output": "HTTP/1.1 302 \r\nLocation: /manage\r\nTransfer-Encoding: chunked\r\nDate: Fri, 04 Oct 2019 14:42:07 GMT\r\n\r\nHTTP/1.1 302 \r\nLocation: /manage/account/login?redirect=%2Fmanage\r\nTransfer-Encoding: chunked\r\nDate: Fri, 04 Oct 2019 14:42:07 GMT\r\n\r\nHTTP/1.1 200 \r\nX-Frame-Options: SAMEORIGIN\r\nvary: accept-encoding\r\nAccept-Ranges: bytes\r\nLast-Modified: Tue, 17 Sep 2019 21:45:08 GMT\r\nCache-Control: max-age=0\r\nExpires: Fri, 04 Oct 2019 14:42:07 GMT\r\nContent-Type: text/html;charset=ISO-8859-1\r\nContent-Length: 12957\r\nDate: Fri, 04 Oct 2019 14:42:07 GMT\r\n\r\n"
+        },