Introduction
If you don't quite get the value of Docker, or as a system admin you are can't let go of your SSH console, start with LXC. After that you might (as I have) turn to like what Docker has to offer.
Latest versus Ubuntu Managed
There are two ways to install Docker on Ubuntu,
| Install Method | How To | Pros | Cons |
|---|---|---|---|
| Ubuntu Managed | See Below |
|
|
| Directly from Docker | Docker website | You get the latest and greatest. | More steps. |
As of 2016, recommendation is (investigating)...
Running a Ubuntu Managed install resulted in Docker 1.11.2 build b9f10c9 which from the Docker release notes was submitted on Jun 1 2016. In comparison, directly results in Docker 1.12.1 build 0dc92ee.
Running Docker Inside of LXD
...
Install Docker Ubuntu Managed
For latest and greatest use the instructions on the Docker website. For easy of maintenance use Ubuntu native,
sudo apt-get install docker.io # not docker by itself which is a Gnome utility
Verify it worked,
sudo docker run hello-world
Building a Docker Image
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Orchestration
Looking top down, the real power of Docker can only be realized with orchestration technologies. Here are the leading ones, I am just starting to look at,
Kubernetes - Used by Google and they have a free trial to check out.
Apache Mesos - Twitter, Airbnb, Hubspot and Apple run it.
Docker Swarm - Not sure how this fits yet.
Docker Resources
References
Docker in LXD - https://insights.ubuntu.com/2016/04/13/stephane-graber-lxd-2-0-docker-in-lxd-712/?_ga=1.131249999.1359600858.1459136071