testcase to create Webdriver as we need to set chrome_options and executable_path (path chromedriver).

testcase.robot

*** Settings ***
Library     SeleniumLibrary
Test Teardown       Close Browser

*** Variables ***
${URL}  https://www.google.com
${txtSearch}  //*[@name="q"]


*** Test Cases ***
Open Browser
    ${chrome_options}=    Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys
    Call Method    ${chrome_options}    add_argument    --disable-dev-shm-usage  #disable page crash of chrome
    Call Method    ${chrome_options}    add_argument    --no-sandbox  #disable sandbox mode
    Call Method    ${chrome_options}    add_argument    --headless  #run with no web browser
    Create Webdriver    driver_name=Chrome    alias=google    chrome_options=${chrome_options}    executable_path=/usr/local/bin/chromedriver
    Set Window Size    1200    1000  #run on docker can't use Maximize Browser Window
    Go To    ${URL}
    Wait Until Element Is Visible  ${txtSearch}  10s
    Input Text  ${txtSearch}  Robotframework
    Press Keys  ${txtSearch}  RETURN
    Capture Page Screenshot  Robotframework.png