(fixed) test script liblwip.so placement, also streamlined test logic

netcon/docker-test/nodejs/nodejs-0.10.36-4.fc23/netcon_dockerfile

@@ -9,6 +9,9 @@ RUN yum clean all
 
 EXPOSE 9993/udp 8080/udp
 
+# Install LWIP library used by service
+ADD liblwip.so /var/lib/zerotier-one/liblwip.so
+
 # 
 ADD httpserver.js /
 
@@ -35,10 +38,5 @@ ADD zerotier-cli /
 ADD netcon_entrypoint.sh /netcon_entrypoint.sh
 RUN chmod -v +x /netcon_entrypoint.sh
 
-# Install LWIP library used by service
-ADD liblwip.so /
-RUN mkdir -p ext/bin/lwip
-RUN cp liblwip.so ext/bin/lwip/liblwip.so
-
 # Start ZeroTier-One
 CMD ["./netcon_entrypoint.sh"]