Richard North and Sergei Egorov on Testcontainers, their new company AtomicJar, and more

Hi, Spring fans! Welcome to another installment of _This Week in Spring_! In this installment, Josh Long talks to [Richard North (@whichrich)](https://twitter.com/whichrich) and [Sergei Egorov (@bsideup)](https://twitter.com/bsideup) about Testcontainers, their new company AtomicJars, and software licensing, among other things.