Merge pull request #627 from SeleniumHQ/upgrade-3.8.1

Upgrading to Selenium 3.8.1

Author: diemol

Base/Dockerfile

@@ -56,5 +56,5 @@ USER seluser
 #==========
 RUN  sudo mkdir -p /opt/selenium \
   && sudo chown seluser:seluser /opt/selenium \
-  && wget --no-verbose https://selenium-release.storage.googleapis.com/3.7/selenium-server-standalone-3.7.1.jar \
+  && wget --no-verbose https://selenium-release.storage.googleapis.com/3.8/selenium-server-standalone-3.8.1.jar \
     -O /opt/selenium/selenium-server-standalone.jar

tests/bootstrap.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 cd tests
-pip install selenium===3.7.0 \
+pip install selenium===3.8.0 \
             docker===2.5.1 \
             | grep -v 'Requirement already satisfied'