Solomon Hykes, who founded startup Docker a decade ago and led its dramatic rise in the cloud computing market, announced in a blog post that he is leaving the company. Mr. Hykes, Docker’s CTO for the past five years, said he will be leading the search for a new CTO with more experience selling to large companies. This has been the central challenge for Docker, which has struggled to generate revenue despite raising nearly $250 million in venture funding and attracting legions of devoted followers in open-source circles. Docker was instrumental in driving adoption of containers, a technology that eases the process of deploying and updating cloud applications. But Docker has fallen behind in software that’s used to manage container applications, an area where Kubernetes, an open-source project that originated at Google, has become a de facto standard. As we reported last October, Google approached Mr. Hykes with an offer to work together at an early stage of the Kubernetes project, but he declined because Docker was developing a competing product called Swarm.