Update to latest debian & prometheus python library

Dockerfile

@@ -1,24 +1,17 @@
-FROM debian:buster
+FROM debian:bookworm
 
 RUN : \
     && apt-get update \
     && apt-get install -y \
+        backblaze-b2 \
         curl \
+        dumb-init \
         python3 \
         python3-prometheus-client \
         python3-yaml \
         restic \
     && apt-get -y clean
 
-RUN : \
-    && curl -s -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_amd64 \
-    && chmod +x /usr/local/bin/dumb-init
-
-RUN : \
-    && curl -s -L https://github.com/restic/restic/releases/download/v0.9.6/restic_0.9.6_linux_amd64.bz2 \
-        | bzip2 > /usr/local/bin/restic \
-    && chmod +x /usr/local/bin/restic
-
 COPY ./restic-monitor.py /usr/local/bin/restic-monitor
 
-CMD ["/usr/local/bin/dumb-init", "--", "/usr/local/bin/restic-monitor", "/etc/restic-backblaze-config.yml"]
+CMD ["/usr/bin/dumb-init", "--", "/usr/local/bin/restic-monitor", "/etc/restic-backblaze-config.yml"]