diff --git a/Dockerfile b/Dockerfile
index b0ca9ed..7a38fe4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bullseye-20211220-slim
+FROM debian:bullseye-20230109-slim
 
 RUN apt-get update && apt-get -y upgrade && \
     apt-get --no-install-recommends -y install \
@@ -14,8 +14,16 @@ COPY qemu-ifdown /run/
 COPY qemu-ifup /run/
 COPY run.sh /run/
 
+RUN ["chmod", "+x", "/run/generate-dhcpd-conf"]
+RUN ["chmod", "+x", "/run/qemu-ifdown"]
+RUN ["chmod", "+x", "/run/qemu-ifup"]
+RUN ["chmod", "+x", "/run/run.sh"]
+
 VOLUME /image
 
+EXPOSE 5000
+EXPOSE 5001
+
 ENTRYPOINT ["/run/run.sh"]
 
 # Mostly users will probably want to configure memory usage.