Get started (https://docs.docker.com/get-started/)

See also

docker run hello-world

Y:\projects_id3\P5N001\XLOGCA135_tutorial_docker\tutorial_docker>docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
        (amd64)
 3. The Docker daemon created a new container from that image which runs the
        executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
        to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://cloud.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide/

docker –version

Y:\projects_id3\P5N001\XLOGCA135_tutorial_docker\tutorial_docker>docker --version

Docker version 17.12.0-ce, build c97c6d6

Conclusion

The unit of scale being an individual, portable executable has vast implications.

It means CI/CD can push updates to any part of a distributed application, system dependencies are not an issue, and resource density is increased.

Orchestration of scaling behavior is a matter of spinning up new executables, not new VM hosts.

We’ll be learning about all of these things, but first let’s learn to walk.