Selenium и Chromedriver¶

Amverum Cloud uses containers under the hood. To be able to use selenium in a container, you need to install the necessary libraries and specify the display port in this container.

Using a ready-made image¶

This image already has the ChromeDriver and Chrome we need

Installation steps:

Create a Dockerfile in the project directory.

In the Dockerfile, specify the image with

FROM joyzoursky/python-chromedriver:3.9

We assign a WORKDIR and specify the application files that will be included in the final image (all files in the project folder):
```
WORKDIR  /app
COPY  .  /app
```
Add a command to install dependencies (we will specify them a little later):
```
RUN  pip  install  -r  requirements.txt
```
We set the command to launch the application:
```
CMD ["python", "main.ru"]
```

The resulting Dockerfile:

FROM  joyzoursky/python-chromedriver:3.9
WORKDIR  /app
COPY  .  /app
RUN  pip  install  -r  requirements.txt
CMD  ["python",  "main.ru"]

Note

Instead of version 3.9 you can specify another Python version that you need and that is supported by the image author.

Creating your own image with ChromeDriver¶

If the required Python version is not supported, you can create your own image with the required version by installing the necessary drivers into it.

In the example given, the base image is python image:3.8 which can be replaced with a suitable one.

# set the base image (instead of 3.8, you can specify another version of Python)
FROM python:3.8

# we are installing google-chrome
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
RUN apt-get -y update
RUN apt-get install -y google-chrome-stable

# set the desired display port
ENV DISPLAY=:99

Example¶

The example will output the Title of the page www.python.org

Add the following files to the root of the project:

requirements.txt
```
selenium==4.17.2
```

amverum.yml

meta:
  environment: docker
  toolchain:
    name: docker
    version: latest
build:
  dockerfile: Dockerfile
  skip: false
run:
  persistenceMount: /data
  containerPort: 80

Dockerfile

FROM  joyzoursky/python-chromedriver:3.9
WORKDIR  /app
COPY  .  /app
RUN  pip  install  -r  requirements.txt
CMD  ["python",  "main.ru"]

main.ru

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument('--headless')
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--disable-dev-shm-usage')

driver = webdriver.Chrome(options=chrome_options)
driver.get("https://www.python.org")
print(driver.title)

driver.close()

If the program works correctly, the following text will be displayed in the console: Welcome to Python.org