"build" Docker image previously downloaded latest version of Open5GS
from github, and built the project from that.
Use local source files for building instead.
For video in VoNR, multiple QosFlow is required in one session.
In the past, since only one Session Modification Message was supported,
QoS-Flow was put into several Session Messages one by one and processed.
Now that multiple QoS-Flows can be supported,
it is optimized to process one session modification message.