example(docker): update compose example with non-HTTPs endpoint

docker-compose.yml

@@ -1,7 +1,6 @@
-version: '3'
+version: "3"
 
 services:
-
   postgres:
     image: postgres
     healthcheck:
@@ -15,22 +14,27 @@ services:
 
   broker_app:
     image: dius/pact-broker
-    ports:
-      - "80:80"
     links:
       - postgres
+    # If you remove nginx, enable the following
+    #ports:
+    #  - "80:80"
     environment:
       PACT_BROKER_DATABASE_USERNAME: postgres
       PACT_BROKER_DATABASE_PASSWORD: password
       PACT_BROKER_DATABASE_HOST: postgres
       PACT_BROKER_DATABASE_NAME: postgres
 
+  # Nginx is not necessary, but demonstrates how
+  # one might use a reverse proxy in front of the broker,
+  # and includes the use of a self-signed TLS certificate
   nginx:
     image: nginx:alpine
     links:
       - broker_app:broker
     volumes:
-    - ./ssl/nginx.conf:/etc/nginx/conf.d/default.conf:ro
-    - ./ssl:/etc/nginx/ssl
+      - ./ssl/nginx.conf:/etc/nginx/conf.d/default.conf:ro
+      - ./ssl:/etc/nginx/ssl
     ports:
-    - "8443:443"
+      - "8443:443"
+      - "80:80"

ssl/nginx.conf

@@ -19,3 +19,14 @@ server {
       proxy_set_header X-Real-IP $remote_addr;
   }
 }
+
+server {
+  listen      80 default_server;
+  server_name localhost;
+
+  location / {
+      proxy_pass http://broker:80;
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+  }
+}