Base on stretch

data/Dockerfiles/rspamd/Dockerfile

@@ -1,14 +1,15 @@
-FROM debian:jessie-slim
+FROM debian:stretch-slim
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 ENV LC_ALL C
 
-RUN apt-key adv --fetch-keys http://rspamd.com/apt-stable/gpg.key \
-	&& echo "deb http://rspamd.com/apt-stable/ jessie main" > /etc/apt/sources.list.d/rspamd.list \
-	&& apt-get update && apt-get install -y \
-		ca-certificates \
-		rspamd \
+RUN apt-get update && apt-get install -y \
+	ca-certificates \
+	gnupg2 \
+	&& apt-key adv --fetch-keys http://rspamd.com/apt-stable/gpg.key \
+	&& echo "deb http://rspamd.com/apt-stable/ stretch main" > /etc/apt/sources.list.d/rspamd.list \
+	&& apt-get update && apt-get install -y rspamd \
 	&& rm -rf /var/lib/apt/lists/* \
 	&& echo '.include $LOCAL_CONFDIR/local.d/rspamd.conf.local' > /etc/rspamd/rspamd.conf.local \
 	&& apt-get autoremove --purge \