feat: add homepage reverse proxy

conf.d/homepage.conf.template

@@ -0,0 +1,16 @@
+upstream homepage_backend {
+    zone homepage_backend 64k;
+    server homepage:3000 resolve;
+}
+
+server {
+    include snippets/https.conf;
+
+    server_name ${BASE_DOMAIN};
+
+    include snippets/proxy.conf;
+
+    location / {
+        proxy_pass http://homepage_backend;
+    }
+}