OSError：[Errno 8]在Docker容器中的python中运行硒时

Question

I've recently learned the basics of Docker and how to create and run images. I'm trying to create an image of a python script that scrapes some webpages for data and uploads it to a server. I'm using Selenium, Chromium, and a Windows chromedriver. I'm trying to build the image on my Windows machine and be able to deploy it on a bunch of Linux/Windows servers. Currently, I'm only building and running on the same Windows machine, just until I get it running, but I keep getting the same error, even though the script runs just fine directly on the machine itself.

This is the error:

Traceback (most recent call last):
  File "my-app.py", line 796, in <module>
    startScraper();
  File "my-app.py", line 92, in startScraper
    browser = webdriver.Chrome(chrome_options = options, executable_path = path_to_chromedriver);
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/chrome/webdriver.py", line 62, in __init__
    self.service.start()
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/common/service.py", line 74, in start
    stdout=self.log_file, stderr=self.log_file)
  File "/usr/local/lib/python3.6/subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "/usr/local/lib/python3.6/subprocess.py", line 1326, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 8] Exec format error

It seems to be related to the chrome options but even when I remove all the "add-argument" options, the error persists, but here are the options:

options = webdriver.ChromeOptions();
options.binary_location = './chrome-win32/chrome.exe';
options.add_argument('headless')
options.add_argument('window-size=1400x1300')
options.add_argument('--mute-audio')
options.add_argument('--disable-web-security');
options.add_argument('--allow-running-insecure-content');
options.add_argument('--ignore-certificate-errors')
options.add_argument('--ignore-ssl-errors')
prefs = {"profile.managed_default_content_settings.images":2}
options.add_experimental_option("prefs", prefs);
path_to_chromedriver = './chromedriver.exe';

Is there anything that I'm missing to be able to run this scraper in a container? Thanks!

EDIT: I forgot to add the Dockerfile and how I build/run the image:

Dockerfile:

FROM python:3.6.0

WORKDIR /my-app

ADD . /my-app

RUN pip install -r requirements.txt

ENV NAME Scraper

CMD ["python", "My_App.py"]

Build/Run image: - docker build -t myapp - docker run myapp

Maybe there are some options that I don't know about that I'm missing?

Answer 1

You are trying to run a exe inside a linux container and that is not going to work. You will need to install chrome and chromedriver inside your Dockerfile and update the code to use the correct path

FROM python:3.6.0
RUN apt update && apt install -y chromedriver
WORKDIR /my-app
ADD . /my-app
RUN pip install -r requirements.txt

ENV NAME Scraper

CMD ["python", "My_App.py"]

Change your code to

options = webdriver.ChromeOptions();
options.add_argument('headless')
options.add_argument('window-size=1400x1300')
options.add_argument('--mute-audio')
options.add_argument('--disable-web-security');
options.add_argument('--allow-running-insecure-content');
options.add_argument('--ignore-certificate-errors')
options.add_argument('--ignore-ssl-errors')
prefs = {"profile.managed_default_content_settings.images":2}
options.add_experimental_option("prefs", prefs);
path_to_chromedriver = '/usr/lib/chromium/chromedriver';