Containers are a popular choice in modern software development. In such an environment "It works in my container" is a programmer excuse you may here more often than its popular predecessor "It works on my machine". A design for developers, engineers and programmers with a sense of humor who work on containerized applications. It shows the "Shrug" unicode emoticon, a famous Internet meme, and the prospective top excuse in IT. Ideal for job, meetings and conferences.