Docker

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- To test docker installation `docker run hello-world`
  id:: 6282befc-090a-4012-8a87-8c6bc2937774
  ```
  ➜  ~ docker run hello-world
  
  Unable to find image 'hello-world:latest' locally
  latest: Pulling from library/hello-world
  7050e35b49f5: Pull complete
  Digest: sha256:80f31da1ac7b312ba29d65080fddf797dd76acfb870e677f390d5acba9741b17
  Status: Downloaded newer image for hello-world:latest
  
  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.
      (arm64v8)
   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
  
  ```