Add Debian Jessie build image

This image is meant to be used to build packages for the Jessie release of Debian. See debian/nginx-build.

debian/jessie/setup.sh

@@ -3,4 +3,5 @@
 echo "deb http://security.debian.org/ jessie/updates main" >> /etc/apt/sources.list
 
 apt-get update
-apt-get -y install git dh-make build-essential autoconf autotools-dev
+apt-get -y install git dh-make build-essential autoconf autotools-dev libpcre3 libpcre3-dev libz-dev
+