<p></p>
<p dir="auto">Since I couldn't get the build working on Ubuntu 24.04, I tried using a Docker image based on Debian 12.6. The build itself works fine, but when running tests, I encounter Selenium errors, specifically:</p>
<p dir="auto"><code class="notranslate">Selenium::WebDriver::Error::InvalidSessionIdError: Tried to run command without establishing a connection</code></p>
<p dir="auto">After some investigation with a colleague, we discovered that the issue arises from the parallelization of tests. Reducing the number of processors used during testing to 1 or 2 resolves the issue, but running tests with the default settings results in errors.</p>
<p dir="auto"><strong>Few remarks:</strong></p>
<ul dir="auto">
<li>Could this issue be related to the OS itself? Has anyone encountered a similar problem when running on Ubuntu?</li>
<li>Does it make sense to push forward with Debian and investigate this further, or should we focus on making Ubuntu 24.04 work? There are some open issues with <code class="notranslate">mini_racer</code> during the container build, which might be related to the failures encountered during <code class="notranslate">bundle install</code>.</li>
</ul>
<hr>
<h4 dir="auto">Logs:</h4>
<div class="highlight highlight-source-shell" dir="auto"><pre class="notranslate">..........................E
Error:
UserSignupTest#test_Show_OpenID_form_when_OpenID_provider_button_is_clicked:
Selenium::WebDriver::Error::UnknownError: Failed to decode response from marionette
test/system/user_signup_test.rb:15:in <span class="pl-s"><span class="pl-pds">`</span>block <span class="pl-k">in</span> <span class="pl-k"><</span>class:UserSignupTest<span class="pl-k">></span><span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"></span></span>
<span class="pl-s"><span class="pl-s">Error:</span></span>
<span class="pl-s"><span class="pl-s">UserSignupTest#test_Show_OpenID_form_when_OpenID_provider_button_is_clicked:</span></span>
<span class="pl-s"><span class="pl-s">Selenium::WebDriver::Error::InvalidSessionIdError: Tried to run command without establishing a connection</span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:62:in `add_cause<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:41:in <span class="pl-pds">`</span></span>error<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:34:in <span class="pl-s"><span class="pl-pds">`</span>initialize<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:101:in `new<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:101:in <span class="pl-pds">`</span></span>create_response<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/default.rb:103:in `request<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:67:in <span class="pl-s"><span class="pl-pds">`</span>call<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/bridge.rb:675:in `execute<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/bridge.rb:292:in <span class="pl-pds">`</span></span>screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/driver.rb:333:in `screenshot<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:58:in <span class="pl-s"><span class="pl-pds">`</span>screenshot_as<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:60:in `screenshot_as<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in <span class="pl-pds">`</span></span>block <span class="pl-k">in</span> save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in `open<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in <span class="pl-s"><span class="pl-pds">`</span>save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/selenium/driver.rb:152:in `save_screenshot<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/session.rb:748:in <span class="pl-pds">`</span></span>block <span class="pl-k">in</span> save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> <internal:kernel>:90:in `tap<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/session.rb:748:in <span class="pl-s"><span class="pl-pds">`</span>save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:106:in `save_image<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:36:in <span class="pl-pds">`</span></span>take_screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:47:in `take_failed_screenshot<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb:8:in <span class="pl-s"><span class="pl-pds">`</span>before_teardown<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"></span></span>
<span class="pl-s"><span class="pl-s">Error:</span></span>
<span class="pl-s"><span class="pl-s">UserSignupTest#test_Show_OpenID_form_when_OpenID_provider_button_is_clicked:</span></span>
<span class="pl-s"><span class="pl-s">Selenium::WebDriver::Error::InvalidSessionIdError: Tried to run command without establishing a connection</span></span>
<span class="pl-s"><span class="pl-s"> test/application_system_test_case.rb:22:in `after_teardown<span class="pl-pds">'</span></span></span>
<span class="pl-s"></span>
<span class="pl-s"></span>
<span class="pl-s">bin/rails <span class="pl-c1">test</span> test/system/user_signup_test.rb:12</span>
<span class="pl-s"></span>
<span class="pl-s">E</span>
<span class="pl-s"></span>
<span class="pl-s">Error:</span>
<span class="pl-s">UserSignupTest#test_Sign_up_from_login_page:</span>
<span class="pl-s">Selenium::WebDriver::Error::UnknownError: Failed to decode response from marionette</span>
<span class="pl-s"> test/system/user_signup_test.rb:7:in <span class="pl-pds">`</span></span>block <span class="pl-k">in</span> <span class="pl-k"><</span>class:UserSignupTest<span class="pl-k">></span><span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"></span>
<span class="pl-s">Error:</span>
<span class="pl-s">UserSignupTest#test_Sign_up_from_login_page:</span>
<span class="pl-s">Selenium::WebDriver::Error::InvalidSessionIdError: Tried to run command without establishing a connection</span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:62:in `add_cause<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:41:in <span class="pl-s"><span class="pl-pds">`</span>error<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/response.rb:34:in <span class="pl-pds">`</span></span>initialize<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:101:in `new<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:101:in <span class="pl-s"><span class="pl-pds">`</span>create_response<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/default.rb:103:in `request<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/http/common.rb:67:in <span class="pl-pds">`</span></span>call<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/bridge.rb:675:in `execute<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/remote/bridge.rb:292:in <span class="pl-s"><span class="pl-pds">`</span>screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/driver.rb:333:in `screenshot<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:58:in <span class="pl-pds">`</span></span>screenshot_as<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:60:in `screenshot_as<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in <span class="pl-s"><span class="pl-pds">`</span>block <span class="pl-k">in</span> save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in `open<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/selenium-webdriver-4.23.0/lib/selenium/webdriver/common/takes_screenshot.rb:39:in <span class="pl-pds">`</span></span>save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/selenium/driver.rb:152:in `save_screenshot<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/session.rb:748:in <span class="pl-s"><span class="pl-pds">`</span>block <span class="pl-k">in</span> save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> <internal:kernel>:90:in `tap<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/capybara-3.40.0/lib/capybara/session.rb:748:in <span class="pl-pds">`</span></span>save_screenshot<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:106:in `save_image<span class="pl-pds">'</span></span>
/var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:36:in <span class="pl-s"><span class="pl-pds">`</span>take_screenshot<span class="pl-s"><span class="pl-pds">'</span></span></span>
<span class="pl-s"><span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb:47:in `take_failed_screenshot<span class="pl-pds">'</span></span></span>
<span class="pl-s"> /var/lib/gems/3.1.0/gems/actionpack-7.1.3.4/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb:8:in <span class="pl-pds">`</span></span>before_teardown<span class="pl-s"><span class="pl-pds">'</span></span>
<span class="pl-s"></span>
<span class="pl-s">Error:</span>
<span class="pl-s">UserSignupTest#test_Sign_up_from_login_page:</span>
<span class="pl-s">Selenium::WebDriver::Error::InvalidSessionIdError: Tried to run command without establishing a connection</span>
<span class="pl-s"> test/application_system_test_case.rb:22:in `after_teardown<span class="pl-pds">'</span></span></pre></div>
<h4 dir="auto">Docker Image:</h4>
<div class="highlight highlight-source-dockerfile" dir="auto"><pre class="notranslate"><span class="pl-k">FROM</span> debian:12.6
<span class="pl-k">ENV</span> DEBIAN_FRONTEND=noninteractive
<span class="pl-c"><span class="pl-c">#</span> Install system packages then clean up to minimize image size</span>
<span class="pl-k">RUN</span> apt-get update \
&& apt-get install --no-install-recommends -y \
build-essential \
curl \
default-jre-headless \
file \
git-core \
gpg-agent \
libarchive-dev \
libffi-dev \
libgd-dev \
libpq-dev \
libsasl2-dev \
libvips-dev \
libxml2-dev \
libxslt1-dev \
libyaml-dev \
locales \
postgresql-client \
ruby \
ruby-dev \
ruby-bundler \
software-properties-common \
tzdata \
unzip \
nodejs \
npm
<span class="pl-c"><span class="pl-c">#</span> Install yarn globally</span>
<span class="pl-k">RUN</span> npm install --global yarn
<span class="pl-c"><span class="pl-c">#</span> Install geckodriver and firefox</span>
<span class="pl-k">RUN</span> apt-get update \
&& apt-get install -y --no-install-recommends \
ca-certificates curl firefox-esr \
&& curl -L https://github.com/mozilla/geckodriver/releases/download/v0.34.0/geckodriver-v0.34.0-linux64.tar.gz | tar xz -C /usr/local/bin
<span class="pl-c"><span class="pl-c">#</span> Install compatible Osmosis to help users import sample data in a new instance</span>
<span class="pl-k">RUN</span> curl -OL https://github.com/openstreetmap/osmosis/releases/download/0.47.2/osmosis-0.47.2.tgz \
&& tar -C /usr/local -xzf osmosis-0.47.2.tgz
<span class="pl-k">ENV</span> DEBIAN_FRONTEND=dialog
<span class="pl-c"><span class="pl-c">#</span> Setup app location</span>
<span class="pl-k">RUN</span> mkdir -p /app
<span class="pl-k">WORKDIR</span> /app
<span class="pl-c"><span class="pl-c">#</span> Install Ruby packages</span>
<span class="pl-k">ADD</span> Gemfile Gemfile.lock /app/
<span class="pl-k">RUN</span> bundle install
<span class="pl-c"><span class="pl-c">#</span> Install NodeJS packages using yarn</span>
<span class="pl-k">ADD</span> package.json yarn.lock /app/
<span class="pl-k">ADD</span> bin/yarn /app/bin/
<span class="pl-k">RUN</span> bundle exec bin/yarn install
</pre></div>
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