debian: don't install suggested and recommended packages.

Author: thresheek

mainline/jessie/Dockerfile

@@ -7,7 +7,7 @@ ENV NGINX_VERSION 1.9.13-1~jessie
 RUN apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62 \
 	&& echo "deb http://nginx.org/packages/mainline/debian/ jessie nginx" >> /etc/apt/sources.list \
 	&& apt-get update \
-	&& apt-get install -y \
+	&& apt-get install --no-install-recommends --no-install-suggests -y \
 						ca-certificates \
 						nginx=${NGINX_VERSION} \
 						nginx-module-xslt \

stable/jessie/Dockerfile

@@ -7,7 +7,8 @@ ENV NGINX_VERSION 1.8.1-1~jessie
 RUN apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62 \
 	&& echo "deb http://nginx.org/packages/debian/ jessie nginx" >> /etc/apt/sources.list \
 	&& apt-get update \
-	&& apt-get install -y ca-certificates nginx=${NGINX_VERSION} gettext-base \
+	&& apt-get install --no-install-recommends --no-install-suggests -y \
+                       ca-certificates nginx=${NGINX_VERSION} gettext-base \
 	&& rm -rf /var/lib/apt/lists/*
 
 # forward request and error logs to docker log collector