mydocker.com is valuable because it combines "my" and "docker," directly referencing Docker, a popular platform for software containerization. This domain can attract developers, DevOps professionals, and tech companies interested in Docker-related services, tutorials, or communities. The term "my" personalizes the domain, suggesting ownership or tailored solutions in technology. The .com TLD enhances its broad appeal and credibility, making it highly attractive for business and tech-oriented sites.