Reference terraform module in the README

Author: george-angel

README.md

@@ -2,7 +2,8 @@
 
 [![Docker Repository on Quay](https://quay.io/repository/utilitywarehouse/ssh-key-agent/status "Docker Repository on Quay")](https://quay.io/repository/utilitywarehouse/ssh-key-agent)
 
-Companion service for https://github.com/utilitywarehouse/ssh-key-manager runs on the host and populates `authorized_keys` file based on the groups provided.
+Companion service for https://github.com/utilitywarehouse/ssh-key-manager runs
+on the host and populates `authorized_keys` file based on the groups provided.
 
 ### client
 
@@ -26,23 +27,9 @@ docker will create it as directory:
 > exist on the Docker host, -v will create the endpoint for you. It is always
 > created as a directory.
 
-```
-[Unit]
-Description=ssh-key-agent
-After=docker.service
-Requires=docker.service
-[Service]
-Restart=on-failure
-ExecStartPre=-/bin/mkdir -p /home/user/.ssh/
-ExecStartPre=-/usr/bin/touch /home/user/.ssh/authorized_keys
-ExecStart=/bin/sh -c 'docker run --name=%p_$(uuidgen) --rm \
- -v /home/user/.ssh/authorized_keys:/authorized_keys \
- -e SKA_KEY_URI=https://[app/bucket]/authmap \
- -e [email protected],[email protected] \
- -e SKA_AKF_LOC=/authorized_keys \
- -e SKA_INTERVAL=60 \
- quay.io/utilitywarehouse/ssh-key-agent'
-ExecStop=/bin/sh -c 'docker stop -t 3 "$(docker ps -q --filter=name=%p_)"'
-[Install]
-WantedBy=multi-user.target
-```
+example Systemd service: [./terraform/resources/ssh-key-agent.service](./terraform/resources/ssh-key-agent.service)
+
+### terraform module
+
+Repository includes a terraform module, for use instructions have a look at
+[./terraform/README.md](./terraform/README.md)