A data router serves User Equipment (UEs) over network connections to network slices. The router executes an operating system, and in response, executes router applications in containers. The router applications receive a container configuration, a connection configuration, and a slice configuration from the wireless communication network. The router applications transfer the container configuration to the operating system. The operating system controls processing qualities of the containers based on the container configuration. The router applications generate and transfer the performance information for the network connections to the wireless communication network. The router applications prioritize the network connections to the network slices based on the slice configuration. The router applications exchange user data with the UEs and exchange the user data with the network slices over the network connections using service qualities based on the connection configuration.