docker/unbound: Use bookworm image (with unbound 1.17.1)

Author: hanazuki

unbound/Dockerfile

@@ -1,26 +1,13 @@
-FROM public.ecr.aws/ubuntu/ubuntu:jammy as build-unbound
-
-RUN apt-get update -qq && \
-    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends git git-buildpackage
-
-WORKDIR /build/unbound
-RUN git clone --no-single-branch -b debian/1.17.1-2 --filter=tree:0 https://salsa.debian.org/dns-team/unbound.git .
-RUN apt-get build-dep -y .
-RUN gbp buildpackage -b -uc -us -j"$(nproc)" --git-ignore-branch --git-no-pristine-tar
-
-###
-
 FROM public.ecr.aws/docker/library/golang:1.20-bullseye as build-exporter
 
 RUN go install github.com/hanazuki/unbound_exporter@679dfa54debd24456ed458a7e72590101b560e2b
 
 ###
 
-FROM public.ecr.aws/ubuntu/ubuntu:jammy
+FROM public.ecr.aws/docker/library/debian:bookworm
 
-RUN --mount=type=bind,from=build-unbound,src=/build,dst=/build \
-    apt-get update -qq && \
-    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends /build/unbound_*.deb dns-root-data dumb-init && \
+RUN apt-get update -qq && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends unbound dns-root-data dumb-init && \
     rm -rf /var/lib/apt/lists/*
 
 COPY --from=build-exporter /go/bin/unbound_exporter /usr/local/bin/