diff --git a/Dockerfile b/Dockerfile
index 7c2623a..30a90ee 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,13 @@
-FROM alpine:3.7
-LABEL maintainer "Stefan Hoffmann>"
+FROM alpine:3.10.3
+LABEL maintainer "Stefan Hoffmann, Nils Jakobi"
 
 # Configure cron
 COPY crontab /etc/cron/crontab
 
+# Copy script
+WORKDIR /opt/fftdf/
+COPY nodePoller.sh .
+
 # Init cron
 RUN crontab /etc/cron/crontab
 
diff --git a/crontab b/crontab
index 7ebe49e..af71e72 100644
--- a/crontab
+++ b/crontab
@@ -1,16 +1 @@
-* * * * * wget http://4.fftdf.de/graph.json -O /opt/data/tdf4/graph.json
-* * * * * wget http://4.fftdf.de/meshviewer.json -O /opt/data/tdf4/meshviewer.json
-* * * * * wget http://4.fftdf.de/nodelist.json -O /opt/data/tdf4/nodelist.json
-* * * * * wget http://4.fftdf.de/nodes.json -O /opt/data/tdf4/nodes.json
-* * * * * wget http://5.fftdf.de/graph.json -O /opt/data/tdf5/graph.json
-* * * * * wget http://5.fftdf.de/meshviewer.json -O /opt/data/tdf5/meshviewer.json
-* * * * * wget http://5.fftdf.de/nodelist.json -O /opt/data/tdf5/nodelist.json
-* * * * * wget http://5.fftdf.de/nodes.json -O /opt/data/tdf5/nodes.json
-* * * * * wget http://6.fftdf.de/graph.json -O /opt/data/tdf6/graph.json
-* * * * * wget http://6.fftdf.de/meshviewer.json -O /opt/data/tdf6/meshviewer.json
-* * * * * wget http://6.fftdf.de/nodelist.json -O /opt/data/tdf6/nodelist.json
-* * * * * wget http://6.fftdf.de/nodes.json -O /opt/data/tdf6/nodes.json
-* * * * * wget http://7.fftdf.de:8080/graph.json -O /opt/data/tdf7/graph.json
-* * * * * wget http://7.fftdf.de:8080/meshviewer.json -O /opt/data/tdf7/meshviewer.json
-* * * * * wget http://7.fftdf.de:8080/nodelist.json -O /opt/data/tdf7/nodelist.json
-* * * * * wget http://7.fftdf.de:8080/nodes.json -O /opt/data/tdf7/nodes.json
+* * * * * /opt/fftdf/nodePoller.sh
\ No newline at end of file
diff --git a/nodePoller.sh b/nodePoller.sh
new file mode 100755
index 0000000..bb4ee00
--- /dev/null
+++ b/nodePoller.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+for i in 4 5 6 7
+do
+    for f in meshviewer #graph nodelist nodes
+    do
+        curl http://$i.fftdf.de/$f.json -o /opt/data/tdf$i/$f.json || sed -i -e 's/"is_online":true/"is_online":false/g' /opt/data/tdf$i/$f.json
+    done
+done
\ No newline at end of file