Selenium + Mink + Chrome: "Could not open connection" error - selenium

Question

I'm not new to setting up Selenium and Mink, but it always seems to be a hassle. This time I'm trying to get it set up in an ubuntu docker container and I am running into the following error:
Could not open connection: Unable to create new service: ChromeDriverService
Build info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:32.194Z'
System info: host: 'a75b4026b8e5', ip: '172.20.0.6', os.name: 'Linux', os.arch: 'amd64', os.version: '4.9.60-linuxkit-aufs', java.version: '1.8.0_161'
Driver info: driver.version: unknown (Behat\Mink\Exception\DriverException)
I can tell that Mink is hitting the Selenium to some degree, since the Selenium server outputs the following immediately before Behat reports the above error:
2018-01-30 16:13:49.870:INFO:osjshC.ROOT:qtp1156060786-12: org.openqa.selenium.remote.server.WebDriverServlet-10bbd20a: Initialising WebDriverServlet
16:13:49.988 INFO - Found handler: org.openqa.selenium.remote.server.commandhandler.BeginSession#4b4945b7
16:13:50.006 INFO - /session: Executing POST on /session (handler: BeginSession)
16:13:50.168 INFO - Capabilities are: Capabilities {browser: chrome, browserName: chrome, ignoreZoomSetting: false, marionette: true, name: Behat feature suite, tags: [a75b4026b8e5, PHP 5.6.31]}
16:13:50.171 INFO - Capabilities {browser: chrome, browserName: chrome, ignoreZoomSetting: false, marionette: true, name: Behat feature suite, tags: [a75b4026b8e5, PHP 5.6.31]} matched class org.openqa.selenium.remote.server.ServicedSession$Factory (provider: org.openqa.selenium.chrome.ChromeDriverService)
16:13:50.302 INFO - Found handler: org.openqa.selenium.remote.server.commandhandler.BeginSession#5a608e4b
16:13:50.303 INFO - /session: Executing POST on /session (handler: BeginSession)
16:13:50.306 INFO - Capabilities are: Capabilities {browser: chrome, browserName: chrome, ignoreZoomSetting: false, marionette: true, name: Behat feature suite, tags: [a75b4026b8e5, PHP 5.6.31]}
16:13:50.307 INFO - Capabilities {browser: chrome, browserName: chrome, ignoreZoomSetting: false, marionette: true, name: Behat feature suite, tags: [a75b4026b8e5, PHP 5.6.31]} matched class org.openqa.selenium.remote.server.ServicedSession$Factory (provider: org.openqa.selenium.chrome.ChromeDriverService)
Any idea what setting I have wrong?
Here's my setup:
Version of the chromedriver I installed:
https://chromedriver.storage.googleapis.com/2.35/chromedriver_linux64.zip
Version of Chrome I have installed via the apt-get install google-chrome-stable command:
Google Chrome 64.0.3282.119
Java version that's installed:
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)
How I started selenium:
xvfb-run --server-args="-screen 0, 1366x768x24" java -Dwebdriver.chrome.driver="usr/bin/chromedriver" -jar selenium-server-standalone-3.8.1.jar &
composer.json:
...
"require-dev": {
"behat/behat": "^3.1",
"behat/mink": "^1.7",
"behat/mink-extension": "^2.2",
"behat/mink-goutte-driver": "^1.2",
"behat/mink-selenium2-driver": "^1.3",
...
},
behat.yml:
extensions:
Behat\MinkExtension:
goutte: ~
base_url: http://localhost/myapp/
browser_name: chrome
javascript_session: selenium2
default_session: goutte
selenium2:
wd_host: "http://127.0.0.1:4444/wd/hub"
capabilities:
marionette: true
browser: chrome
version: 2.9