Dependencies between services in docker-compose

Here’s a question: can Docker Compose wait for a service to be ready (healthy) before starting a dependant one?

Apparently I’m not the only one to be puzzled by this.

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Kerberos authentication in a container

This is a quick one.

We have a bot which uses Kerberos for authentication with other services. Of course we run our bot army in containers within OpenShift.

How do we do it? How can we use Kerberos inside linux containers?

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Not so recent news in container tech

I prepared a demo for my team with (not so) recent news in container tech I discovered. Here it is.

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Unpack container image using docker-py

This is just a quick blog post. I’ve seen a bunch of questions on docker-py’s issue tracker about how to extract a container image using docker-py and get_archive (a.k.a. docker export).

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Efficient git[hub] tooling

This is a follow-up to my previous blog post: “My github pull request workflow”.

I would like to dedicate a complete post on how you can be efficient when using git[hub].

It’s certain that you may have your own tips and tricks up your sleeve. Please share them in the comments.

Let’s begin!

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Building Container Images with Buildah and Ansible

Do you use Ansible roles to provision your infrastructure? And would you like to use those very same roles to create container images? You came to the right place!

We are working on a project (and you problably heard of it already) called Ansible Container. It’s not just about creation of container images. It covers the complete workflow of a containerized application. From build, local run, test to deploy.

In this blog post, I would like to show you how Ansible Container does those builds — from an Ansible role to a container image.

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Building container image with modular OS from scratch

We were sitting at “Modularity UX feedback” session at Flock 2017. Sinny Kumari raised an interesting question: “Can I create a container image with modular OS locally myself?“. Sinny wanted to try the modular OS on different CPU architectures.

The container image can be created using Image Factory, which can be really tough to set up.

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