A high-quality local environment is critical for enabling developers for efficient feature delivery. Docker, when utilized correctly, can simplify the maintenance of the local environment and remove the "it works on my machine” symptom. Join me on an insightful journey as I share years of successes and hard-earned lessons from harnessing Docker for consistent, hassle-free environments. We will review what Docker is and when to use it, how it changes the development accountabilities between teams, the architecture behind an efficient local environment to enable smooth pipelines and production deployment and will unveil valuable tips and real-world examples to optimize Docker usage and boost your development productivity.