Use Chromium instead of Chrome (#782)

Chrome isn’t available yet for aarch64, but Chromium (which is basically
the same browser without the proprietary bits from Google) is shipped by
Debian. They also ship a Chrome driver compiled for aarch64.

By using Chromium instead of Chrome, we unify how we do things
regardless of the architecture used in the generated image.

image/discourse_dev/Dockerfile

@@ -39,6 +39,7 @@ ADD ensure-database /etc/runit/1.d/ensure-database
 ADD install-rust /tmp/install-rust
 ADD install-selenium /tmp/install-selenium
 RUN /tmp/install-selenium
+RUN apt update && apt install -y chromium-driver firefox-esr
 
 # Install & Configure MailHog (https://github.com/mailhog/MailHog)
 RUN wget -qO /tmp/mailhog https://github.com/mailhog/MailHog/releases/download/v1.0.1/MailHog_linux_amd64\

image/discourse_dev/install-selenium

@@ -1,13 +1,9 @@
 #!/bin/bash
 set -e
 
-# The chrome webdriver isn’t available for the aarch64 architecture (yet). We
-# have to rely on the geckodriver instead, so we’re just installing firefox and
-# not even chromium.
 # The Selenium gem isn’t shipped with the `selenium-manager` binary for aarch64
-# either (yet). So we have to compile it ourselves.
+# (yet). So we have to compile it ourselves.
 if [ "$(dpkg --print-architecture)" = "arm64" ]; then
-    apt update && apt install -y firefox-esr
     cd /tmp
     /tmp/install-rust
     git clone --depth 1 --no-checkout https://github.com/SeleniumHQ/selenium.git
@@ -20,9 +16,4 @@ if [ "$(dpkg --print-architecture)" = "arm64" ]; then
     rustup self uninstall -y
     cd /
     rm -rf /tmp/*
-else
-    wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add - &&\
-    echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list &&\
-    apt update &&\
-    apt install -y google-chrome-stable firefox-esr
 fi

image/discourse_test/Dockerfile

@@ -17,10 +17,8 @@ RUN chown -R discourse . &&\
 
 FROM base AS with_browsers
 
-ADD install-chrome /tmp/install-chrome
-RUN /tmp/install-chrome &&\
-    apt update &&\
-    apt install -y libgconf-2-4 libxss1 firefox-esr &&\
+RUN apt update &&\
+    apt install -y libgconf-2-4 libxss1 firefox-esr chromium-driver &&\
     cd /tmp && wget -q "https://download.mozilla.org/?product=firefox-latest-ssl&os=linux64&lang=en-US" -O firefox.tar.bz2 &&\
     tar xjvf firefox.tar.bz2 && mv /tmp/firefox /opt/firefox-evergreen &&\
     apt clean
@@ -36,4 +34,4 @@ RUN cd /var/www/discourse && sudo -E -u discourse -H bundle exec rake plugin:ins
     LOAD_PLUGINS=1 sudo -E -u discourse -H bundle exec rake plugin:install_all_gems &&\
     sudo -E -u discourse -H bundle exec ruby script/install_minio_binaries.rb
 
-ENTRYPOINT ["sudo", "-E", "-u", "discourse", "-H", "ruby", "script/docker_test.rb"]
+ENTRYPOINT ["sudo", "-E", "-u", "discourse", "-H", "ruby", "script/docker_test.rb"]

image/discourse_test/install-chrome

@@ -1,20 +0,0 @@
-#!/bin/bash
-set -e
-
-# https://googlechromelabs.github.io/chrome-for-testing/ doesn't provide linux/arm64 binaries for chrome or chromedriver
-# yet. Therefore on arm64, we install chromium instead of chrome and install a chromedriver for linux/arm64 from
-# https://github.com/electron/electron/releases/.
-#
-# On the current debian Chromium 120.0.6099.224 is installed so we have to install a chromedriver that is of the same version.
-if [ "$(dpkg --print-architecture)" = "arm64" ]; then
-  apt update && apt install -y chromium unzip &&\
-    wget -q -O /tmp/chromedriver.zip https://github.com/electron/electron/releases/download/v28.2.2/chromedriver-v28.2.2-linux-arm64.zip &&\
-    unzip /tmp/chromedriver.zip -d /tmp/chromedriver &&\
-    mv /tmp/chromedriver/chromedriver /usr/bin &&\
-    rm -rf /tmp/chromedriver /tmp/chromedriver.zip
-else
-  wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add - &&\
-    echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list &&\
-    apt update &&\
-    apt install -y google-chrome-stable
-fi