nginx/server: Wait for network before starting service

roles/nginx/server/files/dependency.conf

@@ -0,0 +1,3 @@
+[Unit]
+After=network-online.target
+Requires=network-online.target

roles/nginx/server/tasks/main.yml

@@ -35,6 +35,25 @@
     group: "{{ ansible_wheel }}"
   notify: restart nginx
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1725248
+- block:
+    - name: create drop-in directory for service
+      file:
+        dest: /etc/systemd/system/nginx.service.d
+        state: directory
+        mode: 0755
+        owner: root
+        group: "{{ ansible_wheel }}"
+
+    - name: configure service startup dependencies
+      copy:
+        dest: /etc/systemd/system/nginx.service.d/dependency.conf
+        src: dependency.conf
+        mode: 0644
+        owner: root
+        group: "{{ ansible_wheel }}"
+  when: ansible_os_family == "RedHat"
+
 - name: enable nginx service
   service:
     name: nginx