Action, Docker (image) and test on C#

Hi, can you please assist.

I have GitHub, Docker image and test on C#.
I need load image from docker hub to local linux server and run test on C#. i try find any example in google, but failed.

Do you have an example with the same configuration as mine?
Can you show you example?

At this moment my script is:

jobs: # run Linux server
    runs-on: [self-hosted, linux]       
    - name: actions/checkout@v2 
      uses: actions/checkout@v2 
    - name: Login to Docker Hub
      uses: docker/login-action@v1
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Start test
      id: OoUtv/dotnet5_sdk_chromedriver:latest
      run: cd Solutin/Tests.OnC