Worked on the Tencent/WeKnora repository to address a critical deployment issue related to Tencent Cloud COS storage integration. Focused on configuration management and DevOps practices, the developer resolved an application startup failure that occurred when STORAGE_TYPE was set to 'cos'. By updating the docker-compose.yml file and introducing necessary COS-related environment variables, they ensured proper initialization and reliable usage of COS as the storage backend. This fix, implemented using YAML for configuration, improved deployment reliability and reduced onboarding friction for teams adopting COS storage. The work demonstrated attention to deployment stability and cross-environment consistency within cloud-native application workflows.