web-users: restart docker-web-users-http together with mariadb@users

roles/web-users/files/docker-web-users-http.systemd

+# Make sure web-users container gets restarted when the db does
+# (the unix socket changes)
+[Unit]
+PartOf=mariadb@users.service

roles/web-users/handlers/main.yml

@@ -12,3 +12,7 @@
   systemd:
     name: ai-webdav.service
     state: restarted
+
+- name: reload systemd
+  systemd:
+    daemon_reload: yes

roles/web-users/tasks/main.yml

@@ -13,6 +13,18 @@
     dest: /etc/firewall/filter.d/30web-users
   notify: "reload firewall"
 
+- name: Install systemd override (dir)
+  file:
+    path: /etc/systemd/system/docker-web-users-http.service.d
+    state: directory
+    mode: 0550
+
+- name: Install systemd override
+  file:
+    src: "files/docker-web-users-http.systemd"
+    path: /etc/systemd/system/docker-web-users-http.service.d/web-users.conf
+  notify: "reload systemd"
+
 - include_tasks: webdav.yml
 
 - include_role: