Docker Inspect Template Magic

Most Docker users are aware of the docker inspect command which is used to get metadata on a container or image, and may have used the -f argument to pull out some specific data, for example using docker inspect -f {{.IPAddress}} to get a container’s IP Address. However, … Read more

Running Docker in Jenkins (in Docker)

In this post we’re going to take a quick look at how you can mount the Docker sock inside a container in order to create “sibling” containers. One of my colleagues calls this DooD (Docker-outside-of-Docker) to differentiate from DinD (Docker-in-Docker), where a complete and isolated version of Docker … Read more

The Future is Containerized

We’ve seen a lot of critical posts about Docker recently. I don’t remember the last time a technology caused so much controversy and heated debate1. In this article I’m not going to address any specific technical issues, but try to explain why Docker — or at least some … Read more

Docker and Provenance – Talk to Amsterdam Docker Meetup

The regular Docker Amsterdam meetup was held on Thursday 26th January at the offices of Schuberg Phillis. There were talks on “Docker and Provenance” by our own Chief Scientist Adrian Mouat, Mike Wessling from Bitbrains on “Falling off the shoulders of giants” and Michael Boelen from CISOfy on … Read more

Docker: The latest Confusion

One of the most misunderstood parts of Docker seems to be the latest tag. The confusion stems largely from its name, which doesn’t really reflect what the tag implies. In this post we’ll look at what the latest tag really does and what you should use it for.

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Why Use Fig for Docker Automation?

If you’ve been using Docker for a little while, but you’ve not tried out Fig yet, this blog is for you. Like me, you’ve probably either become used to dealing with long and unwieldy Docker commands using dozens of arguments, or you’ve come up with a bunch of … Read more

Understanding Volumes in Docker

This post was updated on 6 Jan 2017 to cover new versions of Docker.

It’s clear from looking at the questions asked on the Docker IRC channel (#docker on Freenode), Slack and Stackoverflow that there’s a lot of confusion over how volumes work in Docker. In this post, … Read more