In Introduction Module > Demo - Setup and Install Docker
You have used an example to run a docker container -
docker run docker/whalesay cowsay Hello World!
I believe this has been deprecated as I get an error >>
docker run docker/whalesay cowsay Hello Worlddocker run hello-worlddocker run hello-world
Unable to find image ‘docker/whalesay:latest’ locally
latest: Pulling from docker/whalesay
docker: [DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of docker.io/docker/whalesay:latest to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at Registry | Docker Docs.
See ‘docker run --help’.