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Installing Docker
Docker can be installed on Linux, Microsoft Windows, or MacOS machines. Docker "Community Engine", or Docker CE, is the free and open source version of Docker that can be used to run DeGAUSS containers. Follow instructions specific to your operating system found on the Docker CE page on dockerhub. Docker can also be installed to cloud platforms, such as AWS or Azure.
To test your installation, open a shell (e.g. "Terminal" on macOS or "cmd" on Microsoft Windows) and run docker run hello-world. You should see some output describing what Docker did and that it is working correctly:
$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
ca4f61b1923c: Pull complete
Digest: sha256:ca0eeb6fb05351dfc8759c20733c91def84cb8007aa89a5bf606bc8b315b9fc7
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
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Notice that after asking Docker to run a container, if it does not find the image locally, it downloads it from an online repository. This is only necessary the first time you run a container from each image. Once downloaded, Docker will continue to use the same local image to create containers.