Why are you using chrome driver for mac distribution in ubuntu container ? I am not sure of what's beneath it, but I guess there might be some issues due to os type.(Not sure)
You can try adding the ubuntu distribution as shown below, it should work.
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb https://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
sudo apt-get -y update
sudo apt-get -y install google-chrome-stable
RUN sudo apt-get -y install chromium-chromedriver
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