Docker allows developers to package applications into containers that provide the same environment across development and production. It allows for portable and self-contained applications that can run on any infrastructure regardless of operating system. Some key benefits of Docker include increased portability, repeatability, and efficiency through the use of containers which provide isolation while allowing for higher server utilization compared to virtual machines.

1. Docker
it’s like git but for servers

2. In the news
• Docker and Microsoft Partner to
Drive Adoption of Distributed
Applications
• Dell Simplifies the Cloud
Experience with Docker
• AWS Announces the EC2 Container
Service for managing Docker
containers
• IBM and Docker Announce
Strategic Partnership to Deliver
Enterprise Applications
• Docker + VMware = better together

3. the wiki setup page
• download zips
• change variables
• ftp from server
• copy / paste instructions

4. programmers
• the same level of control we have on our code for
our servers
• speed, development and production
• repeatability

6. sysadmins
• Single self-contained portable redistributable
• No arbitrary resource allocation
• More performance from existing servers

7. DEMO

8. docker run ubuntu /bin/bash

9. docker run ubuntu /bin/bash
Registry Image
pull
Container
run
Image
commit
push
Dockerfilebuild

10. • Registry - Storage location for images. An example is
DockerHub which is like Github but for servers. You can
host your own also
• Image - Readonly templates that contain your operating
system and files. Images are stored in registries
• Container - This is your virtualized operating system. Uses
namespaces, control groups, and union file systems.
Containers are built from templates called images. I can
also save the container state to be used as a template for
another container
• Dockerfile - A Makefile for your image. Contains the steps
needed to produce the container. So what does run mean.

11. Questions
• docker.com
• https://www.joyent.com/
developers/videos/docker-
and-the-future-of-containers-
in-production
• https://www.youtube.com/
watch?
v=GVVtR_hrdKI&index=9&list
=PLwyG5wA5gIzjhW36BxGBo
QwUZHnPDFux3