concourse_worker: add binds templating

app/concourse_worker/defaults.yaml

@@ -1,11 +1,12 @@
 ---
 
 container:
+  binds: []
+  env: {}
   image: concourse/concourse
-  tag: latest
   restart: unless-stopped
   shm_size: 64M
-  env: {}
+  tag: latest
 
 settings:
   data_dir: /opt/concourse/data

app/concourse_worker/init.sls

@@ -48,6 +48,9 @@ concourse worker container:
     - binds:
       - {{ settings.data_dir }}:/data:ro
       - /var/run/docker.sock:/var/run/docker.sock
+{%- for bind in container.binds.items() %}
+      - {{ bind }}
+{%- endfor %}
 {% if container.env %}
     - environment:
 {%- for key, value in container.env.items() %}