10_exec_in_container.md

Execute Command In Container

Docker Documentation References:

docker exec

Intent

The purpose of this kata is to familiarize yourself with the process of executing commands inside an active docker container.

Overview

In this exeercise we will start a container and execute the ps command on the running container and then stop the container.

Kata Steps

Start the Container

Command

docker start docker_katas_nginx

Output

thought:DockerKata rich$ docker start docker_katas_nginx
docker_katas_nginx

Execute the ps command

Command

docker exec docker_katas_nginx ps

Output

thought:DockerKata rich$ docker exec docker_katas_nginx ps
PID   USER     TIME   COMMAND
    1 root       0:00 nginx: master process nginx -g daemon off;
    7 nginx      0:00 nginx: worker process
    8 root       0:00 ps

Stop the Container

Command

docker stop docker_katas_nginx

Output

thought:DockerKata rich$ docker stop docker_katas_nginx
docker_katas_nginx

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