Update to debian bullseye

Update to debian bullseye

diff --git a/Dockerfile b/Dockerfile
index c0d9828..fd06887 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get update \
   && DEBIAN_FRONTEND=noninteractive apt-get dist-upgrade -y \

GitHub sha: 32728c4c73f8f2cf035a9d557a69d44811b716f7