After using SSH connect to the server. Try to run hello world in Docker.
Hello-World in Docker
Hello-World image
You can check out Docker Hub for more Docker images.
Simply copy the following command to run hello world in Docker
docker run hello-world
If Docker unable to find the image locally, it will pull the image automatically
or you can pull the iamge manually
docker pull hello-world
docker run hello-world
Also you can specify the image by the tag
docker pull hello-world:latest
For more docker command you can checkout docker doc