document adding dev key for custom Apache/FCGI install

following the docs will only get you the release key and the install of custom Apache/FCGI fails w/ key error

diff --git a/doc/install/install-ceph-gateway.rst b/doc/install/install-ceph-gateway.rst
index 6baf7ef6df7c4ec140c65a46f9a28740fafef52c..8edd89e5a39ab246693bd08780213c51a757d4bc 100644 (file)
--- a/doc/install/install-ceph-gateway.rst
+++ b/doc/install/install-ceph-gateway.rst
@@ -58,6 +58,9 @@ builds of Apache and FastCGI packages modified for Ceph at `gitbuilder.ceph.com`
 Debian Packages
 ---------------
 
+#. Add the development key:
+        wget -q -O- https://raw.github.com/ceph/ceph/master/keys/autobuild.asc | sudo apt-key add -
+
 #. Add a ``ceph-apache.list`` file to your APT sources. :: 
 
        echo deb http://gitbuilder.ceph.com/apache2-deb-$(lsb_release -sc)-x86_64-basic/ref/master $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph-apache.list