Homepage: rewrite deploy

Prepare for two-step deploy:
- local build and fix local tag
- deploy to remote server

files/homepage/docker-compose.template.yml

@@ -0,0 +1,13 @@
+services:
+  homepage_app:
+    # noinspection ComposeUnknownValues
+    image: "{{ registry_homepage_nginx_image }}"
+    container_name: homepage_app
+    restart: unless-stopped
+    networks:
+      - "web_proxy_network"
+
+networks:
+  web_proxy_network:
+    external: true
+