As a developer in an agile world it becomes quite normal to be involved in more than one activity (projects, trainings and some research) at a time. Each of these activities may require a specific setup of development environments in terms of programming languages, compiler and library versions. Installing and maintaining all this with a classical approach is error-prone and requires a lot of effort. Using task-specific virtual machines would solve the problem, but it consumes a lot of resources and causes a lot of maintenance as well, because one also needs to keep VM’s operating system up to date. This article shows, how DevContainers can help you create and maintain reproducible development environments leveraging the benefits of modern container technology.