diff --git a/docker/RO/Dockerfile b/docker/RO/Dockerfile
index 0a98dee..64bad45 100644
--- a/docker/RO/Dockerfile
+++ b/docker/RO/Dockerfile
@@ -98,6 +98,8 @@
     python3-minimal=3.8.* \
     && rm -rf /var/lib/apt/lists/*
 
+RUN rm -f /etc/apt/apt.conf.d/proxy.conf
+
 COPY --from=INSTALL /usr/lib/python3/dist-packages /usr/lib/python3/dist-packages
 COPY --from=INSTALL /usr/local/lib/python3.8/dist-packages  /usr/local/lib/python3.8/dist-packages
 COPY --from=INSTALL /usr/bin/genisoimage /usr/bin/genisoimage