feat(sygnal): add version as container label

roles/sygnal/README.md

@@ -7,6 +7,7 @@ Role Variables
 --------------
 
 specify Apps with:
+```
 sygnal_apps:
   - id: com.example.myapp
     type: apns
@@ -15,6 +16,7 @@ sygnal_apps:
   - id: com.example.myotherapp
     type: gcm
     gcm_api_key: your_api_key_for_gcm
+```
 
 it is possible to use systemd and pip instead of docker, specify as follows:
 sygnal_supervision_method: systemd
@@ -22,7 +24,9 @@ sygnal_deployment_method: pip
 CAUTION: this role is not tested with this variables set, probably it needs maintenace to work properly
 
 You have to overide the db password in order to run sygnal
+```
 sygnal_postgresql_password:
+```
 
 A complete list of all variables is in defaults/main.yml
 

roles/sygnal/defaults/main.yml

@@ -26,9 +26,14 @@ sygnal_postgresql_database: "sygnal"
 sygnal_postgresql_host: "172.17.0.1"
 sygnal_postgresql_user: "sygnal"
 
+sygnal_version: "0.5.0"
 sygnal_docker_name: sygnal
-sygnal_docker_image: "registry.gitlab.com/famedly/containers/sygnal"
+sygnal_docker_image: "registry.gitlab.com/famedly/containers/sygnal:v{{ sygnal_version }}"
+#sygnal_docker_image: "matrixdotorg/sygnal:v{{ sygnal_version }}" #with 0.7.0 not working (yet)
 sygnal_docker_ports: []
+sygnal_docker_labels_complete: "{{ sygnal_docker_labels_base | combine(sygnal_docker_labels) }}"
+sygnal_docker_labels_base:
+  version: "{{ sygnal_version }}"
 sygnal_docker_labels: {}
 
 # Metrics

roles/sygnal/tasks/deployment.yml

@@ -45,7 +45,7 @@
     name: "{{ sygnal_docker_name }}"
     image: "{{ sygnal_docker_image }}"
     ports: "{{ sygnal_docker_ports }}"
-    labels: "{{ sygnal_docker_labels }}"
+    labels: "{{ sygnal_docker_labels_complete }}"
     restart_policy: unless-stopped
     recreate: true
     pull: true