How to Upgrade / Update Docker on Fedora 22
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
Introduction
Docker is a container-based software framework commonly used for automating deployment of applications. “Containers” are encapsulated, lightweight, and portable application modules.
Pre-Flight Check
- These instructions are intended for upgrading / updating Docker.
- I’ll be working from a Liquid Web Self Managed Fedora 22 server, and I’ll be logged in as root.
Step 1: Upgrade / Update Docker on Fedora 22
Just one simple command:
dnf upgrade -y docker-io
Step 2: Other Docker Commands
Docker should already be started, but if it isn’t then you can start it with the following command:
systemctl start docker
Docker should also already be configured to start when the server boots, but if it isn’t then you can do so with the following command:
systemctl enable docker
Step 2: Download a Docker Container
Let’s begin using Docker! Download the fedora Docker image:
docker pull fedora
Step 3: Run a Docker Container
Now, to setup a basic fedora container with a bash shell, we just run one command. docker run will run a command in a new container, -i attaches stdin and stdout, -t allocates a tty, and we’re using the standard fedora container.
docker run -i -t fedora /bin/bash
That’s it! You’re now using a bash shell inside of a fedora docker container.
To disconnect, or detach, from the shell without exiting use the escape sequence Ctrl-p + Ctrl-q.
There are many community containers already available, which can be found through a search. In the command below I am searching for the keyword fedora:
docker search fedora
Related Articles:
About the Author: J. Mays
Our Sales and Support teams are available 24 hours by phone or e-mail to assist.
Latest Articles
How to Edit Your DNS Hosts File
Read ArticleHow to Edit Your DNS Hosts File
Read ArticleMicrosoft Exchange Server Security Update
Read ArticleHow to Monitor Your Server in WHM
Read ArticleHow to Monitor Your Server in WHM
Read Article