Add Dockerfile template for horizon

Change-Id: I2210a75c6803e41fa8cfd49a377e7948dcb64bc6
Partially-Implements: blueprint dockerfile-template

docker_templates/horizon/Dockerfile.j2

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+FROM {{ namespace }}/{{ base_distro }}-{{ install_type }}-base:{{ tag }}
+MAINTAINER Kolla Project (https://launchpad.net.kolla)
+
+{% if install_type == 'binary' %}
+    {% if base_distro in ['centos', 'fedora', 'oraclelinux'] %}
+
+RUN yum -y install \
+    openstack-dashboard \
+    httpd \
+    mod_wsgi \
+    && yum clean all \
+    && chown -R apache:apache /usr/share/openstack-dashboard/static
+
+# The chown is required because of this packaging bug:
+# https://bugzilla.redhat.com/show_bug.cgi?id=1219006
+
+    {% elif base_distro in ['ubuntu', 'debian'] %}
+
+RUN echo '{{ install_type }} not yet available for {{ base_distro }}' \
+    && /bin/false
+
+    {% endif %}
+
+{% elif install_type == 'source' %}
+
+ADD ./horizon.tar /
+RUN ln -s /horizon-* /horizon
+
+RUN yum install -y \
+    httpd \
+    mod_wsgi \
+    && yum clean all
+
+RUN cd /horizon \
+    && useradd --user-group horizon \
+    && pip install -r requirements.txt \
+    && pip install /horizon \
+    && mkdir -p /etc/openstack-dashboard /var/log/horizon /usr/share/openstack-dashboard/static \
+    && chown -R apache:apache /usr/share/openstack-dashboard/static \
+    && rm -rf /root/.cache
+
+# The chown is required because of this packaging bug:
+# https://bugzilla.redhat.com/show_bug.cgi?id=1219006
+
+{% endif %}
+
+COPY config-external.sh /opt/kolla/
+COPY start.sh /
+
+CMD ["/start.sh"]

docker_templates/horizon/config-external.sh

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+../../docker/common/horizon/config-external.sh

docker_templates/horizon/start.sh

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+../../docker/common/horizon/start.sh