Docker 101: The Basics
I. How To Install Docker on CentOS 6 How To Install Docker on CentOS 7 How To Install Docker on Ubuntu 14.04 LTS How To Install Docker on Fedora 20 How To Install Docker on Fedora 21 II. How To List and Attach to Docker Containers III. How to Commit Changes and Create Docker Images IV. How to View Logs for a Docker Container
- As of June 2014 Docker has officially released v1.0.0.
- These instructions are intended for listing and attaching to Docker containers.
- I’ll be working from a Liquid Web Core Managed CentOS 6.6 server (or CentOS 7, Ubuntu 14.04 LTS, Fedora 20, Fedora 21), and I’ll be logged in as root.
- I have one Docker container running.
List ContainersFirst, we’ll list which containers we have running:
docker psYour result should look similar to this:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 9c09acd48a25 fedora:20 /bin/bash 55 minutes ago Up 53 minutes furious_heisenbergTo list all local containers use -a option:
docker ps -aIt is some times handy to view the latest created container, including non-running containers. Simply use the -l option:
docker ps -l
Attach to a Specific ContainerTo attach to a specific container you must have the Container ID. In this case, we’ll attach to the container with the ID 9c09acd48a25 :
docker attach 9c09acd48a25Continue through this series of tutorials to configuring your container, and committing the changes to create a Docker image.