mv Dockerfile,start.sh to debian/11

debian/11/Dockerfile

@@ -0,0 +1,21 @@
+FROM debian:bullseye-slim
+
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		pdns-server \
+		pdns-backend-bind \
+		sqlite3 \
+		bind9-dnsutils \
+		inotify-tools \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ADD start.sh /
+
+EXPOSE 53/tcp 53/udp
+VOLUME ["/var/lib/powerdns"]
+
+CMD /start.sh
+
+HEALTHCHECK CMD dig +timeout=1 @127.0.0.1 || exit 1