Fixed docker setup.sh comparison

docker/Dockerfile

@@ -46,8 +46,7 @@ RUN echo "PATH=\$PATH:/usr/games" >> /app/.bashrc
 RUN which aprsd
 RUN aprsd sample-config > /config/aprsd.conf
 
-ADD bin/run.sh /app
-ADD bin/listen.sh /app
+ADD bin/setup.sh /app
 ADD bin/admin.sh /app
 
 # For the web admin interface

docker/Dockerfile-dev

@@ -46,8 +46,6 @@ RUN which aprsd
 RUN aprsd sample-config > /config/aprsd.conf
 
 ADD bin/setup.sh /app
-ADD bin/run.sh /app
-ADD bin/listen.sh /app
 ADD bin/admin.sh /app
 
 EXPOSE 8000

docker/bin/setup.sh

@@ -6,7 +6,7 @@ set -x
 # what command you want to run in the container
 COMMAND="server"
 
-if [ ! -z "$@" ]; then
+if [ ! -z "${@+x}" ]; then
   COMMAND=$@
 fi