Woodpecker server and agent always have the same version

https://github.com/woodpecker-ci/woodpecker/blob/master/.woodpecker/docker.yml

roles/docker/defaults/main.yml

@@ -167,8 +167,7 @@ services:
     file: woodpecker.yml
     domain: "ci.{{ base_domain }}"
     volume_folder: "{{ volume_root_folder }}/woodpecker"
-    server_version: v0.15
-    agent_version: v0.15
+    version: v0.15
 
   mailu:
     file: mailu.yml

roles/docker/tasks/services/woodpecker.yml

@@ -8,7 +8,7 @@
       version: "3.8"
       services:
         server:
-          image: "woodpeckerci/woodpecker-server:{{ services.woodpecker.server_version }}"
+          image: "woodpeckerci/woodpecker-server:{{ services.woodpecker.version }}"
           restart: always
           networks:
             - default
@@ -28,7 +28,7 @@
             LETSENCRYPT_EMAIL: "{{ letsencrypt_email }}"
 
         agent:
-          image: "woodpeckerci/woodpecker-agent:{{ services.woodpecker.agent_version }}"
+          image: "woodpeckerci/woodpecker-agent:{{ services.woodpecker.version }}"
           restart: always
           volumes:
             - "/var/run/docker.sock:/var/run/docker.sock"