Currently, all three services' artifact names are set to build. This leads to a single artifact with files from all three services as siblings. This has two problems:
1. If there's an overlap in a filename among the files in build folder of two services, one of them will be overwritten with the other.
2. The same large artifact is downloaded every time we do a download-artifact, once for server, once for client, and once for RTS, the same large artifact is downloaded thrice before building the Docker images.
