Revert raspbian Dockerfile changes

Signed-off-by: Amin Vakil <[email protected]>

Author: aminvakil

packaging/distros/raspbian/Dockerfile

@@ -6,7 +6,7 @@ ARG BASE_BUILDER
 # Lookup the name to use below but should follow the '<distro>-base' convention with slashes replaced.
 # Use buildkit to skip unused base images: DOCKER_BUILDKIT=1
 
-FROM balenalib/rpi-raspbian:bullseye AS raspbian-bullseye-base
+FROM balenalib/rpi-raspbian:buster AS raspbian-buster-base
 ENV DEBIAN_FRONTEND noninteractive
 
 # Builder image so dependencies can be latest, recommended and no need to wipe
@@ -21,8 +21,8 @@ RUN apt-get update && \
     libsasl2-2 libsasl2-dev libyaml-dev libcurl4-openssl-dev pkg-config && \
     apt-get install -y --reinstall lsb-base lsb-release
 
-# raspbian/bullseye base image
-FROM balenalib/rpi-raspbian:bullseye AS raspbian-bullseye-base
+# raspbian/buster base image
+FROM balenalib/rpi-raspbian:buster AS raspbian-buster-base
 ENV DEBIAN_FRONTEND noninteractive
 
 # hadolint ignore=DL3008,DL3015