Update Dockerfile

- that's what you get from outdated stuff

Author: ich777

Dockerfile

@@ -1,5 +1,9 @@
 FROM debian:buster-slim
 
+RUN echo "deb http://archive.debian.org/debian/ buster main contrib non-free" > /etc/apt/sources.list && \
+    echo "deb http://archive.debian.org/debian-security/ buster/updates main contrib non-free" >> /etc/apt/sources.list && \
+    echo 'Acquire::Check-Valid-Until "false";' > /etc/apt/apt.conf.d/99no-check-valid-until
+
 RUN apt-get update && \
   DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
   wget \