Updated gecko driver to latest version 0.16.1.

Author: testphreak

NodeFirefox/Dockerfile.txt

@@ -20,7 +20,7 @@ RUN apt-get update -qqy \
 #============
 # GeckoDriver
 #============
-ARG GECKODRIVER_VERSION=0.16.0
+ARG GECKODRIVER_VERSION=0.16.1
 RUN wget --no-verbose -O /tmp/geckodriver.tar.gz https://github.com/mozilla/geckodriver/releases/download/v$GECKODRIVER_VERSION/geckodriver-v$GECKODRIVER_VERSION-linux64.tar.gz \
   && rm -rf /opt/geckodriver \
   && tar -C /opt -zxf /tmp/geckodriver.tar.gz \