fix(seed-deis-registry): move into deis-registry.service

Since we moved seed-deis-registry from the user-data file
in #770, the Makefile broke since we cannot perform many
systemctl actions on a oneshot service. This moves it into
an ExecStartPost after the deis-registry service starts.

fixes #774

Author: carmstrong

registry/systemd/deis-registry.service

@@ -1,12 +1,14 @@
 [Unit]
 Description=deis-registry
+Requires=seed-docker-images.service
+After=seed-docker-images.service
 
 [Service]
 TimeoutStartSec=20m
 ExecStartPre=/bin/sh -c "/usr/bin/docker history deis/registry >/dev/null || /usr/bin/docker pull deis/registry"
 ExecStartPre=/bin/bash -c "/usr/bin/docker start deis-registry-data || /usr/bin/docker run --name deis-registry-data -v /data deis/data"
 ExecStart=/bin/sh -c "IFACE=$(netstat -nr | grep ^0.0.0.0 | awk '{print $8}') && HOST_IP=$(/bin/ifconfig $IFACE | awk '/inet /{print $2}') && exec /usr/bin/docker run --name deis-registry -p 5000:5000 -e PUBLISH=5000 -e HOST=$HOST_IP --volumes-from deis-registry-data deis/registry"
-ExecStartPost=/bin/sh -c "IFACE=$(netstat -nr | grep ^0.0.0.0 | awk '{print $8}') && HOST_IP=$(/bin/ifconfig $IFACE | awk '/inet /{print $2}') && echo "Waiting for listener on 5000/tcp..." && until cat </dev/null>/dev/tcp/$HOST_IP/5000; do sleep 1; done"
+ExecStartPost=/bin/sh -c "IFACE=$(netstat -nr | grep ^0.0.0.0 | awk '{print $8}') && HOST_IP=$(/bin/ifconfig $IFACE | awk '/inet /{print $2}') && echo 'Waiting for listener on 5000/tcp...' && until cat </dev/null>/dev/tcp/$HOST_IP/5000; do sleep 1; done && docker pull deis/slugrunner:latest && docker tag deis/slugrunner $HOST_IP:5000/deis/slugrunner && docker push $HOST_IP:5000/deis/slugrunner"
 ExecStop=/usr/bin/docker rm -f deis-registry
 
 [Install]