Add rsync to dockerfile

.devcontainer/Dockerfile

@@ -2,6 +2,7 @@ FROM pytorch/pytorch:2.0.1-cuda11.7-cudnn8-runtime
 
 RUN apt-get update && \
     apt-get upgrade -y && \
+    apt-get install -y rsync && \
     apt-get install -y git && \
     rm -rf /var/lib/apt/lists/*