Move Chrome Driver Version to Env

This will allow us to upgrade chrome driver easily. Set the default chrome driver to 2.32.

Also remove the comment and empty line to avoid getting below warning:

```
[WARNING]: Empty continuation lines will become errors in a future release.
```

Author: taufek

docker-compose.yml

@@ -43,6 +43,7 @@ services:
           - INSTALL_DUSK_DEPS=${WORKSPACE_INSTALL_DUSK_DEPS}
           - PUID=${WORKSPACE_PUID}
           - PGID=${WORKSPACE_PGID}
+          - CHROME_DRIVER_VERSION=${WORKSPACE_CHROME_DRIVER_VERSION}
           - NODE_VERSION=${WORKSPACE_NODE_VERSION}
           - YARN_VERSION=${WORKSPACE_YARN_VERSION}
           - TZ=${WORKSPACE_TIMEZONE}

env-example

@@ -56,6 +56,7 @@ WORKSPACE_INSTALL_TERRAFORM=false
 WORKSPACE_INSTALL_DUSK_DEPS=false
 WORKSPACE_PUID=1000
 WORKSPACE_PGID=1000
+WORKSPACE_CHROME_DRIVER_VERSION=2.32
 WORKSPACE_NODE_VERSION=stable
 WORKSPACE_YARN_VERSION=latest
 WORKSPACE_TIMEZONE=UTC

workspace/Dockerfile-71

@@ -628,26 +628,23 @@ RUN if [ ${INSTALL_TERRAFORM} = true ]; then \
 # Dusk Dependencies:
 #####################################
 USER root
+ARG CHROME_DRIVER_VERSION=stable
+ENV CHROME_DRIVER_VERSION ${CHROME_DRIVER_VERSION}
 ARG INSTALL_DUSK_DEPS=false
 ENV INSTALL_DUSK_DEPS ${INSTALL_DUSK_DEPS}
 RUN if [ ${INSTALL_DUSK_DEPS} = true ]; then \
-  # Install required packages
   add-apt-repository ppa:ondrej/php \
   && apt-get update \
   && apt-get -y install zip wget unzip xdg-utils \
     libxpm4 libxrender1 libgtk2.0-0 libnss3 libgconf-2-4 xvfb \
     gtk2-engines-pixbuf xfonts-cyrillic xfonts-100dpi xfonts-75dpi \
     xfonts-base xfonts-scalable x11-apps \
-
-  # Install Google Chrome
   && wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb \
   && dpkg -i --force-depends google-chrome-stable_current_amd64.deb \
   && apt-get -y -f install \
   && dpkg -i --force-depends google-chrome-stable_current_amd64.deb \
   && rm google-chrome-stable_current_amd64.deb \
-
-  # Install Chrome Driver
-  && wget https://chromedriver.storage.googleapis.com/2.31/chromedriver_linux64.zip \
+  && wget https://chromedriver.storage.googleapis.com/${CHROME_DRIVER_VERSION}/chromedriver_linux64.zip \
   && unzip chromedriver_linux64.zip \
   && mv chromedriver /usr/local/bin/ \
   && rm chromedriver_linux64.zip \