contrib/docker/: Switch to Debian slim.

diff --git a/contrib/docker/Dockerfile b/contrib/docker/Dockerfile
index a691f2e..0346c68 100644 (file)
--- a/contrib/docker/Dockerfile
+++ b/contrib/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:stable
+FROM debian:stable-slim
 
 ENV DEBIAN_FRONTEND noninteractive
 COPY 50docker-apt-conf /etc/apt/apt.conf.d/