set execution permission

Author: LoTerence

stage/Dockerfile

@@ -45,7 +45,7 @@ COPY ./backend/ .
 COPY --from=react-builder /code/dist/ ./frontend_dist/
 
 # Set run permission on entrypoint.sh
-RUN chmod +x /app/entrypoint.sh
+RUN chmod +x entrypoint.sh
 
 # ENTRYPOINT contains the start server script
 ENTRYPOINT ["./entrypoint.sh"]