Fix/pin traefik version (#645)

we do not want different traefik versions hanging around

Author: crosmuller

roles/docker/defaults/main.yml

@@ -8,5 +8,6 @@ docker_apt_gpg_key_checksum: "sha256:1500c1f56fa9e26b9b8f42452a553675796ade0807c
 docker_apt_filename: "docker"
 docker_install_traefik: true
 docker_traefik_ldaps: false
+docker_traefik_version: 3.6.10
 docker_traefik_ports:
   - 0.0.0.0:443:443

roles/docker/tasks/main.yml

@@ -82,7 +82,7 @@
 - name: Create the Traefik loadbalancer
   community.docker.docker_container:
     name: loadbalancer
-    image: traefik:latest
+    image: traefik:{{ docker_traefik_version }}
     published_ports: "{{ docker_traefik_ports }}"
     pull: true
     restart_policy: "always"