Merge branch 'master' into master

Dockerfile

@@ -10,16 +10,22 @@ RUN \
   apt-get -y install ca-certificates tzdata &&\
   cargo build --release
 
-FROM debian:bullseye-slim
+# https://hub.docker.com/r/bitnami/minideb
+FROM bitnami/minideb:latest
 
+# microbin will be in /app
 WORKDIR /app
 
+# copy time zone info
 COPY --from=build \
   /usr/share/zoneinfo \
   /usr/share/zoneinfo
+
 COPY --from=build \
   /etc/ssl/certs/ca-certificates.crt \
   /etc/ssl/certs/ca-certificates.crt
+
+# copy built exacutable
 COPY --from=build \
   /app/target/release/microbin \
   /usr/bin/microbin