Update Dockerfile

Author: chcost

Dockerfile

@@ -25,8 +25,7 @@ COPY --chown=ray:users codeflare codeflare/codeflare
 COPY --chown=ray:users notebooks codeflare/notebooks
 COPY --chown=ray:users resources codeflare/resources
 
-RUN apt-get update
-RUN apt-get install gcc
+USER ray
 
 RUN pip install jupyterlab
 RUN pip install matplotlib