add fedora-rawhide to test harness

Use the "semi-official" base image for rawhide.
It appears to be updated on a regular basis.

This gives us advance warning of breaking changes
in the bleeding-edge version of fedora.

hacking/runtests.sh

@@ -64,10 +64,12 @@ titotest-centos-5.9
 titotest-centos-6.4
 titotest-fedora-19
 titotest-fedora-20
+titotest-fedora-rawhide
 '
 
 python3_distros='
 titotest-fedora-20
+titotest-fedora-rawhide
 '
 
 rm -f /tmp/titotest*.out &> /dev/null

hacking/titotest-fedora-rawhide/Dockerfile

@@ -0,0 +1,25 @@
+# https://index.docker.io/_/fedora/
+FROM fedora:rawhide
+
+# http://jumanjiman.github.io/
+MAINTAINER Paul Morgan <jumanjiman@gmail.com>
+
+# NOTE: runtests.sh hard-links tito.spec into this directory on-the-fly
+#       to work around https://github.com/dotcloud/docker/issues/1676
+ADD tito.spec /tmp/tito.spec
+
+# Install build dependencies.
+RUN yum -y install yum-utils \
+    ; yum-builddep -y /tmp/tito.spec \
+    ; yum clean all
+
+RUN useradd sandbox
+RUN git config --global user.email "sandbox@example.com"
+RUN git config --global user.name  "sandbox"
+
+USER sandbox
+VOLUME ["/home/sandbox"]
+WORKDIR /home/sandbox
+
+ENV LANG C
+CMD ["/bin/bash"]

hacking/titotest-fedora-rawhide/README.md

@@ -0,0 +1 @@
+../../HACKING