July 3, 2018

How to Clear your Docker Certified Associate Exam

Hi! In this post, I will try to describe what is Docker Certified Associate Exam (DCA) is all about, why it is a good idea to learn Docker through it, and how can you prepare yourself for this exam. At the end of the post, you can find some useful resources that will help you during the preparations. So, let’s get started. What is DCA According to the official website: Read more

June 26, 2018

Do Golang Web Apps Dream of Docker Images?

Hello there! In my last blog post, I used a simple NodeJS application for testing Kuberentes Ingress. I was thinking that it can be useful to write a similar app in another backend programming language. As you can see from the title of this post I chose Golang, mostly because I really like its syntax. I’m going to deploy the app with docker, so this blog post will be useful for those of you who were wondering how to deploy a Golang web app with Docker. Read more

June 18, 2018

Hygiene of Docker Images

As you probably know, 17 malicious Docker container images have been deleted from Docker Hub. The images, downloaded over 5 million times, helped crooks mine Monero worth over $90,000 at today’s exchange rate. I wanted to share my thoughts and examples of how you can secure yourself and your infrastructure from the mining of cryptocurrency for some folks over there. First, the obvious one Never-ever-ever download and run the unknown Docker Image from the internet. Read more

June 11, 2018

How to Change Time Zone in Docker Containers

Time is money … or so they say. This blog post will help you to change the time zone in your docker containers easily. The term time zone can be used to describe several different things, but mostly it refers to the local time of a region or a country. On Linux or MacOS you can check your time zone via $ date Mon Jun 11 19:26:35 CEST 2018 On Linux, you can go further and check timezone via Read more

November 9, 2017

How to Use Notary

Notary is a tool for publishing and managing trusted collections of content. Publishers can digitally sign collections and consumers can verify integrity and origin of content. This ability is built on a straightforward key management and signing interface to create signed collections and configure trusted publishers With Notary anyone can provide trust over arbitrary collections of data. Using The Update Framework (TUF) as the underlying security framework, Notary takes care of the operations necessary to create, manage, and distribute the metadata necessary to ensure the integrity and freshness of your content. Read more

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