Keep empty outlet files instead of removing them

This is necessary because `replace` operation checks if file exists
first. This is a fix for socketed template.

Author: nbianca

templates/web.socketed.template.yml

@@ -23,3 +23,9 @@ run:
      to: |
        listen unix:/shared/nginx.https.sock ssl;
        set_real_ip_from unix:;
+  - replace:
+     filename: "/etc/nginx/conf.d/outlets/before-server/10-redirect-http-to-https.conf"
+     from: /listen 80;(\nlisten \[::\]:80;)?/
+     to: |
+       listen unix:/shared/nginx.http.sock;
+       set_real_ip_from unix:;

templates/web.ssl.template.yml

@@ -9,7 +9,9 @@ run:
           listen 80;
           return 301 https://$$ENV_DISCOURSE_HOSTNAME$request_uri;
         }
-  - exec: rm /etc/nginx/conf.d/outlets/server/10-http.conf
+  - file:
+      path: "/etc/nginx/conf.d/outlets/server/10-http.conf"
+      contents: ""
   - file:
       hook: ssl
       path: "/etc/nginx/conf.d/outlets/server/20-https.conf"

templates/web.template.yml

@@ -135,15 +135,18 @@ run:
         - "cp $home/config/nginx.sample.conf /etc/nginx/conf.d/discourse.conf"
         - "rm /etc/nginx/sites-enabled/default"
         - "mkdir -p /var/nginx/cache"
-        - "mkdir -p /etc/nginx/conf.d/outlets/before-server"
-        - "mkdir -p /etc/nginx/conf.d/outlets/server"
-        - "mkdir -p /etc/nginx/conf.d/outlets/discourse"
 
         # Stop building the container if the Nginx outlets are missing
         - "grep -q 'outlets/before-server' /etc/nginx/conf.d/discourse.conf || ( >&2 echo 'The \"before-server\" Nginx outlet is missing. This version of discourse_docker is not compatible with the chosen Discourse version.' ; exit 1 )"
         - "grep -q 'outlets/server' /etc/nginx/conf.d/discourse.conf || ( >&2 echo 'The \"server\" Nginx outlet is missing. This version of discourse_docker is not compatible with the chosen Discourse version.' ; exit 1 )"
         - "grep -q 'outlets/discourse' /etc/nginx/conf.d/discourse.conf || ( >&2 echo 'The \"discourse\" Nginx outlet is missing. This version of discourse_docker is not compatible with the chosen Discourse version.' ; exit 1 )"
 
+        # Create placeholders for the Nginx outlets
+        - "mkdir -p /etc/nginx/conf.d/outlets/before-server"
+        - "mkdir -p /etc/nginx/conf.d/outlets/server"
+        - "mkdir -p /etc/nginx/conf.d/outlets/discourse"
+        - "touch /etc/nginx/conf.d/outlets/before-server/10-redirect-http-to-https.conf"
+
   - replace:
       filename: /etc/nginx/nginx.conf
       from: pid /run/nginx.pid;