Nicolas Vaquero centralized the Hasura GraphQL Engine image source for the worldcoin/developer-portal repository by updating the Dockerfile to pull images directly from AWS public ECR. This approach preserved existing image tags and versions, minimizing disruption while reducing cross-registry dependencies. By focusing changes on the image sourcing layer, Nicolas improved deployment reliability and made future updates more maintainable. The work leveraged containerization and DevOps skills, specifically working with Dockerfile syntax and AWS ECR integration. No major bugs were reported during this period, and all modifications were documented for traceability, resulting in a more auditable and consistent deployment process for the project.