iemafzalhassan / docker

Docker Exercises

Docker

Docker Exercise 1.1

GETTING STARTED Since we already did "Hello, World!" in the material let's do something else. Start 3 containers from an image that does not automatically exit (such as nginx) in detached mode. Stop two of the containers and leave one container running. Submit the output for docker ps -a which shows 2 stopped containers and one running.

iemafzal~docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED          STATUS          PORTS      NAMES
f424fb367366   redis     "docker-entrypoint.s…"   9 seconds ago    Up 9 seconds    6379/tcp   zealous_visvesvaraya
a5d9d31e1fd3   httpd     "httpd-foreground"       18 seconds ago   Up 17 seconds   80/tcp     dazzling_banzai
57b67b8f1b13   nginx     "/docker-entrypoint.…"   32 seconds ago   Up 32 seconds   80/tcp     intelligent_wilson
iemafzal~docker stop f424fb367366 a5d9d31e1fd3
f424fb367366
a5d9d31e1fd3

iemafzal~docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED              STATUS                     PORTS     NAMES
f424fb367366   redis     "docker-entrypoint.s…"   52 seconds ago       Exited (0) 5 seconds ago             zealous_visvesvaraya
a5d9d31e1fd3   httpd     "httpd-foreground"       About a minute ago   Exited (0) 4 seconds ago             dazzling_banzai
57b67b8f1b13   nginx     "/docker-entrypoint.…"   About a minute ago   Up About a minute          80/tcp    intelligent_wilson
iemafzal~

Docker Exercise 1.2

CLEANUP

We have containers and an image that are no longer in use and are taking up space. Running docker ps -a and docker image ls will confirm this. Clean the Docker daemon by removing all images and containers. Submit the output for docker ps -a and docker image ls

iemafzal~docker stop f424fb367366 a5d9d31e1fd3
f424fb367366
a5d9d31e1fd3
iemafzal~docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED              STATUS                     PORTS     NAMES
f424fb367366   redis     "docker-entrypoint.s…"   52 seconds ago       Exited (0) 5 seconds ago             zealous_visvesvaraya
a5d9d31e1fd3   httpd     "httpd-foreground"       About a minute ago   Exited (0) 4 seconds ago             dazzling_banzai
57b67b8f1b13   nginx     "/docker-entrypoint.…"   About a minute ago   Up About a minute          80/tcp    intelligent_wilson
iemafzal~docker rm f4 a5 57 
f4
a5
57

iemafzal~docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED              STATUS                      PORTS     NAMES
cf4af5cbbf78   httpd     "httpd-foreground"       58 seconds ago       Exited (0) 43 seconds ago             competent_davinci
1fa66b6b340a   nginx     "/docker-entrypoint.…"   About a minute ago   Exited (0) 44 seconds ago             vigorous_bassi
131e3dc4c7ce   redis     "docker-entrypoint.s…"   About a minute ago   Exited (0) 44 seconds ago             laughing_chatelet

iemafzal~docker rm cf 1f 131
cf
1f
131
iemafzal~docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
iemafzal~docker ps 
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
iemafzal~