Ubuntu

Docker is Everywhere

Here is a blog post I posted on my blog at Cybercom.

If I should mention one topic that has been more or less on everybody’s lips at every conference I have attended in 2014, it would be Docker. I do not think I have ever seen a technology that has been embraced by so many so fast before.

So what is Docker then?

In short, it is a platform for building, shipping and running applications using containerization.

Read more about it at https://www.docker.com/whatisdocker/

Here are a couple of examples:

Get ubuntu images from Docker Hub:

$ docker pull ubuntu

Starting a container running Ubuntu 14.04 is as easy as this:

$ docker run -it ubuntu/14.04 /bin/bash

Deploying an application in a container running Wildfly on Ubuntu can be done by creating a Dockerfile similar to this (ivargrimstad/ubuntu-wildfly is a Docker image I have uploaded to my repository at Docker Hub (https://hub.docker.com/u/ivargrimstad/):

FROM ivargrimstad/ubuntu-wildfly
ADD ./app.war /opt/jboss/wildfly/standalone/deployments/app.war

Build the image:

$ docker build --rm -t myapp .

And run the application on port 80:

$ docker run -it -p 80:8080 myapp

These were just a couple of easy examples to get you startet. Try the Docker tutorial at https://www.docker.com/tryit/ to try it out without installing anything locally.

 

A Special Year

The first time I attended JavaOne was 1999 and I have only missed it once since then. Sadly, this year will be the second time I am not present there. I have become kind of used to the week in San Francisco every year. It is the perfect way to start the summer with a visit to that beautiful city. Since it is in September this year, it would probably been the perfect way to end the summer (…we have short summers here in Scandinavia…).

I will for sure miss the massive input and inspiration this conference gives me and enables me to keep up-to-date on everything that is happening in the Java Community. This year’s conference is also special since it is the first time Oracle is hosting the show. It feels like a good idea to co-host it with Oracle Develop and I hope it will be a success to be continued. Next year, I will definitely be attending, one way or the other…!