Index: /trunk/BNC/Dockerfile
===================================================================
--- /trunk/BNC/Dockerfile	(revision 9468)
+++ /trunk/BNC/Dockerfile	(revision 9469)
@@ -4,10 +4,12 @@
 # Usage: docker/podman build -t bnc:2.13 .
 FROM debian:buster-slim
+#FROM ubuntu:20.10
 
 LABEL maintainer="igs-ip@bkg.bund.de"
 LABEL version="2.13"
 
-RUN apt-get update && apt-get install -y build-essential libssl-dev
-RUN apt-get install -y qtbase5-dev libqt5svg5-dev
+RUN apt update && apt upgrade -y
+RUN apt install -y build-essential libssl-dev
+RUN apt install -y qtbase5-dev libqt5svg5-dev
 
 COPY bnc_plugin.pro bnc.pro /tmp/BNC/