The summary provides an overview of the key points from DockerCon Day 1: - Ben Golub, Docker CEO, welcomed attendees and encouraged them to use hashtags and share photos from the conference to win prizes. - The keynote discussed how Docker has grown significantly over the past year in terms of contributors, projects, job openings, dockerized applications, and downloads. - It was noted that applications have fundamentally changed to be more distributed and composed of loosely coupled microservices, and Docker is helping enable this new model of application development and deployment. - The keynote discussed Docker's vision for the future of distributed applications and highlighted what Docker in production means in terms of community, ecosystem, and solutions for security