Make nmap work in Docker

Dockerfile

@@ -5,6 +5,12 @@ VOLUME /config
 
 RUN pip3 install --no-cache-dir -r requirements_all.txt
 
+# For the nmap tracker
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends nmap net-tools && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# Open Z-Wave disabled because broken
 #RUN apt-get update && \
 #    apt-get install -y cython3 libudev-dev && \
 #    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \