Updated docker-compose files for use with Docker Caddy

Defined top level name for all services
Added proxy-net to services
Updated main service/server container service name to "app"
Updated hostname references to projectname-app-1
Updated docker Caddy caddyfile to reference container names
Updated docker Caddy caddyfile to use 192.168.1.234 instead of localhost for non-docker services
Adjusted caddyfile accordingly

overseerr/docker-compose.yml

@@ -1,14 +1,20 @@
+name: overseerr
 services:
-  overseerr:
+  app:
     image: sctx/overseerr:latest
-    container_name: overseerr
     user: '115'
     environment:
       - LOG_LEVEL=debug
       - TZ=America/Los_Angeles
+    networks:
+      - proxy-net
     ports:
-      - 5055:5055
+      - "5055:5055"
     volumes:
       - ./data:/app/config
       - ./config/settings.json:/app/config/settings.json
     restart: unless-stopped
+
+networks:
+  proxy-net:
+    external: true