In this session presented at RubyKaigi 2019, Giovanni Sakti discusses the process of building a container platform within the Ruby ecosystem, particularly focusing on the challenges and learnings from this initiative at his company, Gojek. Sakti begins by introducing himself and explaining Gojek's role as a multifaceted super app in Southeast Asia. He emphasizes Gojek's heavy reliance on Ruby—specifically JRuby—and how this laid the groundwork for implementing a new container platform. The presentation transitions into technical territory, explaining the motivation for creating the container platform due to fragmentation across services and a need for centralization as the company scales. The key points discussed include:

• Open Source Commitment: A strategic decision to create and use open-source frameworks to facilitate development and ensure seamless integration with existing production services.
• Container Migration Planning: Challenges associated with migrating numerous services from traditional VMs to containers, especially in a hybrid infrastructure setup due to regulatory requirements for certain services like Gopay.
• Burrito Log Project: Development of a unified logging platform that abstracts various logging services and is built primarily in Ruby.
• Pathfinder: Introduction of 'Pathfinder,' a container management platform constructed in Ruby. Sakti describes the architecture involving a state server, scheduler, and agents responsible for container management.
• Component Interaction: The interplay between the scheduler and the state server, along with the self-registration process for new worker nodes, is elaborated upon.
• Ruby and MRuby Use: Discussion on integrating MRuby due to its lightweight nature and the simplicity in creating executables tailored to their needs.
• Ruby vs. Go Performance: Sakti compares the performance of Ruby and Go, noting the strengths and weaknesses as the development moved towards using MRuby.
• Future Prospects: The potential for scaling Pathfinder within other departments at Gojek as the demand grows, stressing the importance of documentation and community engagement in improving MRuby.

In conclusion, Sakti highlights that while there are still hurdles in finding adequate libraries in Ruby, the potential for building a streamlined, efficient container platform using Ruby is promising. Moreover, he emphasizes the importance of community contributions towards enhancing the Ruby ecosystem's capabilities for container management. He ends the session inviting questions from the audience, fostering a community discussion around these advancements.