changed ownership

services/phew/Dockerfile

@@ -27,7 +27,11 @@ COPY ./src /home/ctfuser/chall/src
 COPY ./start.sh /start.sh
 RUN chmod +x /start.sh /home/ctfuser/chall/src/run.sh
 
-RUN chown -R root:root /home/ctfuser/chall && chmod -R 555 /home/ctfuser/chall
+RUN chown -R root:root /home/ctfuser/chall && \
+    chmod -R 555 /home/ctfuser/chall && \
+    chown ctfuser:ctfuser /home/ctfuser/chall/src/Pailier.py && \
+    chmod 755 /home/ctfuser/chall/src/Pailier.py
 
 EXPOSE 8000 22
 CMD ["/start.sh"]
+