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

triliumnext-notes/docker-compose.yml

@@ -6,9 +6,15 @@ services:
     volumes:
       - ./data:/home/node/trilium-data
       - ./config:/home/node/trilium-config
+    networks:
+      - proxy-net
     ports:
       - "127.0.0.1:8040:8080"
     environment:
       USER_UID: 1000
       USER_GID: 1000
-      TRILIUM_CONFIG_INI_PATH: /home/node/trilium-config/config.ini
+      TRILIUM_CONFIG_INI_PATH: /home/node/trilium-config/config.ini
+
+networks:
+  proxy-net:
+    external: true