docker

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$ docker run debian echo "hello world"
  Unable to find image 'debian:latest' locally
  latest: Pulling from library/debian
  3e731ddb7fc9: Pull complete
  Digest: sha256:4fcd8c0b6f5e3bd44a3e63be259fd0c038476d432953d449ef34aedf16def331
  Status: Downloaded newer image for debian:latest
  hello world

$ docker images
  REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  debian              latest              1b3ec9d977fb        3 weeks ago         100MB
  

$ docker ps -a
  CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS                     PORTS        NAMES
  1255ab138c08        debian              "echo 'hello world'"   2 minutes ago       Exited (0) 2 minutes ago        hardcore_mayer
  
$ docker run -i -t debian /bin/bash
  root@d8a067db43a9:/# echo "hello from container"
  hello from container
  root@d8a067db43a9:/# exit
  exit

$ docker diff quirky_kalam      # diff from original image
  A /bash
  A /bash/bash
  A /bash/cat
  A /bash/chgrp

$ docker ps -a                  # Show all containers including archived

$ docker inspect 3f91bd108f39   # inspect conatiner

$ docker inspect 3f91bd108f39 | grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.2",
                    "IPAddress": "172.17.0.2",


$ docker inspect --format {{.NetworkSettings.IPAddress}} 3f91bd108f39
  172.17.0.2


$ docker logs 3f91bd108f39            # inspect command history


$ docker ps -aq -f status=exited      # show stopped container
  87233f96dc49
  bd5452f58f76
  d8a067db43a9
  1255ab138c08

$ docker rm -v $(docker ps -aq -f status=exited)    # remove all stopped containers, including non-ref volumes

$ docker run -h CONTAINER -it --rm debian /bin/bash       # remove container when exited

$docker run -it --name cowsay --hostname cowsay debian bash
  root@cowsay:/# apt-get update
  Get:1 http://security.debian.org stretch/updates InRelease [63.0 kB]
  ....
  Reading package lists... Done
  root@cowsay:/# apt-get install -y cowsay fortune
  Reading package lists... Done
  ...
  Processing triggers for libc-bin (2.24-11+deb9u1) ...
  root@cowsay:/# /usr/games/fortune | /usr/games/cowsay
   ____________________________________
  / The smallest worm will turn being  \
  | trodden on.                        |
  |                                    |
  \ -- William Shakespeare, "Henry VI" /
   ------------------------------------
          \   ^__^
           \  (oo)\_______
              (__)\       )\/\
                  ||----w |
                  ||     ||
  root@cowsay:/#


$ docker commit cowsay test/cowsayimage         # Commit container after running above command
sha256:5fe981e55fa7a0d5e8d2980008f9247a175a42cb99910b72bc8085796ab1076d

$ docker images
  REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  test/cowsayimage    latest              5fe981e55fa7        48 seconds ago      158MB
  debian              latest              1b3ec9d977fb        3 weeks ago         100MB


$ docker run test/cowsayimage /usr/games/cowsay "Moo"
   _____
  < Moo >
   -----
          \   ^__^
           \  (oo)\_______
              (__)\       )\/\
                  ||----w |
                  ||     ||