Add version labels

compose.yml

@@ -1,6 +1,4 @@
----
 version: "3.8"
-
 services:
   app:
     image: hackmdio/hackmd:2.3.2
@@ -10,7 +8,7 @@ services:
       - CMD_DB_USER=codimd
       - CMD_DB_HOST=db
       - CMD_DB_PASSWORD_FILE=/run/secrets/db_password
-      - CMD_EMAIL  # Email login enabled?
+      - CMD_EMAIL # Email login enabled?
     depends_on:
       - db
     networks:
@@ -38,13 +36,13 @@ services:
         - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLForceHost=true"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
+        - coop-cloud.${STACK_NAME}.app.version=2.3.2-40b5df94
     healthcheck:
       test: ["CMD", "wget", "-qO", "-", "http://localhost:3000"]
       interval: 30s
       timeout: 10s
       retries: 10
       start_period: 1m
-
   db:
     image: postgres:11.11-alpine
     environment:
@@ -57,22 +55,19 @@ services:
       - db_password
     networks:
       - internal
-
-
+    deploy:
+      labels: ['coop-cloud.${STACK_NAME}.db.version=11.11-alpine-5c163653']
 volumes:
   postgres:
   codimd_uploads:
-
 secrets:
-  db_password:    
-    external: true 
+  db_password:
+    external: true
     name: ${STACK_NAME}_db_password_${SECRET_DB_PASSWORD_VERSION}
-
 networks:
   proxy:
     external: true
   internal:
-
 configs:
   entrypoint_conf:
     name: ${STACK_NAME}_entrypoint_${ENTRYPOINT_CONF_VERSION}