Fix dockerfile executable path, add git to container (#354)

examples/dockerfile

@@ -1,17 +1,18 @@
 FROM fedora
 MAINTAINER langdon <langdon@fedoraproject.org>
 RUN yum clean all && yum -y update
-RUN yum -y install python python-pip make gcc krb5-devel python-devel python-setuptools python-gssapi python-nitrate python-dateutil python-urllib-gssapi
+RUN yum -y install python python-pip make gcc krb5-devel python-devel python-setuptools python-gssapi python-nitrate python-dateutil python-urllib-gssapi git-core
 RUN yum clean all
 
 COPY . /opt/did
 WORKDIR /opt/did
-RUN python setup.py install
+RUN git config --global --add safe.directory '*' \
+ && python setup.py install \
+ && ln -s /did.conf /root/.did
 #RUN ln -s /user-home/.did /root/.did
-RUN ln -s /did.conf /root/.did
 
 VOLUME /did.conf
 
 LABEL RUN docker run --privileged --rm -it -v $(HOME)/.did:/did.conf $(USERNAME)/did
 
-ENTRYPOINT ["/usr/bin/did"]
+ENTRYPOINT ["/opt/did/bin/did"]