selenium with behat : Unable to find provider for session - docker

Question

So I'm trying to configure selenium in a docker container, to use with behat, and the hub has the status not ready when I reach http://localhost:4444/status :
{
"value": {
"ready": false,
"message": "Selenium Grid not ready.",
"nodes": [
{
"id": "f746de23-58e4-499d-85fd-9bad4f904488",
"uri": "http:\u002f\u002f172.22.0.5:5555",
"maxSessions": 2,
"stereotypes": [
{
"capabilities": {
"browserName": "chrome"
},
"count": 2
}
],
"sessions": [
]
}
]
}
}
And when I run the tests :
Could not open connection: Payload received from webdriver is valid but unexpected json: {
"value": {
"error": "session not created",
"message": "Unable to find provider for session: Capabilities {browser: firefox, browserName: chrome, ignoreZoomSetting: false, name: Behat feature suite, tags: [509f70556c1c, PHP 7.4.9]}, Capabilities {browserName: chrome}, Capabilities {browserName: firefox}, Capabilities {}\nBuild info: version: '4.0.0-alpha-7', revision: '117b9d61c9'\nSystem info: host: '7f39dcd595c7', ip: '172.22.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '4.19.76-linuxkit', java.version: '1.8.0_265'\nDriver info: driver.version: unknown",
"stacktrace": "org.openqa.selenium.SessionNotCreatedException: Unable to find provider for session: Capabilities {browser: firefox, browserName: chrome, ignoreZoomSetting: false, name: Behat feature suite, tags: [509f70556c1c, PHP 7.4.9]}, Capabilities {browserName: chrome}, Capabilities {browserName: firefox}, Capabilities {}\nBuild info: version: '4.0.0-alpha-7', revision: '117b9d61c9'\nSystem info: host: '7 (Behat\Mink\Exception\DriverException)
I tried many configuration, mostly in the wd_host param in behat.yml, but everything I tried (different url, different port...) brought me errors.
My docker-composer.yml:
version: '3'
services:
chrome:
image: selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
volumes:
- /dev/shm:/dev/shm
depends_on:
- selenium-hub
environment:
- SE_EVENT_BUS_HOST=selenium-hub
- SE_EVENT_BUS_PUBLISH_PORT=4442
- SE_EVENT_BUS_SUBSCRIBE_PORT=4443
ports:
- "6900:5900"
selenium-hub:
image: selenium/hub:4.0.0-alpha-7-prerelease-20200907
container_name: selenium-hub
ports:
- "4442:4442"
- "4443:4443"
- "4444:4444"
restart: always
My behat.yml:
extensions:
Behat\MinkExtension:
base_url: "http://localhost"
browser_name: 'chrome'
sessions:
my_session:
selenium2:
wd_host: "http://selenium-hub:4444"
browser: chrome
capabilities: { "browserName": "chrome"}
FriendsOfBehat\SymfonyExtension: null
For a moment I thought it was related to the "capabilities" parameter so I tried to put things in it but it didn't change anything, and I guess if it was just that, the hub would still tell me that it is ready.
Any idea ? Thank you

Answer 1

I made it work with a previous version the the image of chrome selenium/node-chrome:3.141.59-oxygen .
And I had to change the base_url in behat.yml for the container "url" of my webserver. (http://nginx is my case)