GitHub's Developer Experience (DX) team faced the challenge of enabling fast and reliable development cycles in a distributed microservice system, which led to the creation of "Hubber Codespace" (HCS). HCS allows developers to locally simulate the entire GitHub ecosystem by configuring their development containers, thereby enabling them to test code changes within an integrated environment. This approach circumvents the complexities of monorepos and disparate service dependencies by bringing the ecosystem to the developers. The team evaluated several orchestration solutions, ultimately choosing Docker-Compose for its minimal maintenance burden and efficiency. To enhance user experience, a custom Golang CLI was developed to simplify interactions with HCS. By facilitating integration testing directly from developers' preferred environments and providing easy access to the latest GitHub ecosystem version, HCS improves engineering efficiency and ensures code reliability. The initiative reflects GitHub's developer-first mindset and commitment to containerization, significantly enhancing the development loop for GitHub's internal teams.