Chrome failed to start

[Luiz Fernando Estivalet]

When trying to run the image the following error is displayed:

docker run -it --rm -v ${PWD}:/robot moleszek/robotframework:latest -m robot test.robot

I think the image is using root to launch chrome. Is there a way to change this behaviour?

WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally.
(unknown error: DevToolsActivePort file doesn't exist)
(The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
Stacktrace:
#0 0x563df9ccfa23
#1 0x563df979ae18
#2 0x563df97be1f1
#3 0x563df97b991a
#4 0x563df97f474a
#5 0x563df97ee883
#6 0x563df97c43fa
#7 0x563df97c54c5
#8 0x563df9cff16d
#9 0x563df9d155bb
#10 0x563df9d00e75
#11 0x563df9d15e85
#12 0x563df9cf486f
#13 0x563df9d30ae8
#14 0x563df9d30c68
#15 0x563df9d4baad
#16 0x7f0fc85d8ea7

[Michał O]

Hi @estivalet

Thank you for creating this issue.

In this case, the root is not a problem to run chrome.

Inside the Keywords section you need to create a step that will run chrome in headless mode.

Chrome Headless
    ${chrome_options}=    Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome_options}    add_argument    --disable-extensions
    Call Method    ${chrome_options}    add_argument    --headless
    Call Method    ${chrome_options}    add_argument    --disable-gpu
    Call Method    ${chrome_options}    add_argument    --no-sandbox
    Create Webdriver    Chrome    chrome_options=${chrome_options}

Then in Settings add Test Setup and run Chrome Headless.

See this example how it's should look like.

Please, let me know if this solution is good for you 😄

[Luiz Fernando Estivalet]

Hi @solairen thanks for the reply. Yes it works. But in this case I am not able to see the browser running the test. I am doing my personal docker image with VNC just for testing purporses and I don't know how I can run chrome with non-root user.

[Michał O]

@estivalet

If you want to add a user to your docker image just add it to Dockerfile:

(...)
ARG user={USERNAME}
ARG home=/home/${user}
RUN addgroup docker
RUN adduser --disabled-password --gecos "" --home ${home} --ingroup docker ${user}

RUN chown ${user}:docker /usr/bin/google-chrome
RUN chown $[user}:docker /usr/bin/chromedriver

Then you will need to do this (depends on your os system): dockerGUI

Lastly, you will need to modify this:

*** Keywords ***
Chrome Headless
    ${chrome_options}=    Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome_options}    add_argument    --disable-extensions
    Call Method    ${chrome_options}    add_argument    --headless
    Call Method    ${chrome_options}    add_argument    --disable-gpu
    Call Method    ${chrome_options}    add_argument    --no-sandbox
    Create Webdriver    Chrome    chrome_options=${chrome_options}

to that:

*** Keywords ***
Chrome Headless
    ${chrome_options}=    Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome_options}    add_argument    --disable-extensions
    Call Method    ${chrome_options}    add_argument    --no-sandbox
    Create Webdriver    Chrome    chrome_options=${chrome_options}

You will see the browser running as a non-root user inside your docker container.

[Luiz Fernando Estivalet]

@solairen Thanks for the help! I'll give a try.