Setting a proxy selenium(docker) with auth

selenium_proxy_auth.py

from selenium.webdriver import Remote, ChromeOptions
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities


import zipfile

PROXY_HOST = '192.168.3.2'  # rotating proxy or host
PROXY_PORT = 8080 # port
PROXY_USER = 'proxy-user' # username
PROXY_PASS = 'proxy-password' # password

manifest_json = """
{
    "version": "1.0.0",
    "manifest_version": 2,
    "name": "Chrome Proxy",
    "permissions": [
        "proxy",
        "tabs",
        "unlimitedStorage",
        "storage",
        "<all_urls>",
        "webRequest",
        "webRequestBlocking"
    ],
    "background": {
        "scripts": ["background.js"]
    },
    "minimum_chrome_version":"22.0.0"
}
"""

background_js = """
var config = {
        mode: "fixed_servers",
        rules: {
        singleProxy: {
            scheme: "http",
            host: "%s",
            port: parseInt(%s)
        },
        bypassList: ["localhost"]
        }
    };
chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});
function callbackFn(details) {
    return {
        authCredentials: {
            username: "%s",
            password: "%s"
        }
    };
}
chrome.webRequest.onAuthRequired.addListener(
            callbackFn,
            {urls: ["<all_urls>"]},
            ['blocking']
);
""" % (PROXY_HOST, PROXY_PORT, PROXY_USER, PROXY_PASS)

chrome_options = ChromeOptions()

pluginfile = 'proxy_auth_plugin.zip'
with zipfile.ZipFile(pluginfile, 'w') as zp:
    zp.writestr("manifest.json", manifest_json)
    zp.writestr("background.js", background_js)

chrome_options.add_argument('--start-maximized')
chrome_options.add_argument('--ignore-certificate-errors')
chrome_options.add_extension(pluginfile)

driver = Remote(
    command_executor='http://127.0.0.1:4444',
    desired_capabilities=DesiredCapabilities.CHROME,
    options=chrome_options
)