fix runtime issues

docker/Dockerfile

@@ -3,7 +3,7 @@ MAINTAINER Lawrence Stubbs <technoexpressnet@gmail.com>
 
 COPY startmeshcentral.sh /
 RUN apt-get update \
-    && apt-get install -y p7zip-full \
+    && apt-get install -y p7zip-full which \
     && wget -q http://www.7-zip.org/a/lzma1604.7z \
     && 7z x lzma1604.7z -olzma1604 \
     && cp lzma1604/bin/*.sfx /usr/lib/p7zip/ \

docker/startmeshcentral.sh

@@ -11,7 +11,7 @@ if [ $2 != "" ]; then
 fi
 
 su - meshcentral
-cd /home/meshcentral
+cd /home/meshcentral/
 npmbin=$(which node)
 foreverbin=$(which forever)
 $npmbin install meshcentral