Enhance project configuration by setting output to "standalone" in Next.js config files and updating .gitignore to include example environment files for better clarity and management.

DOCKER.md

@@ -0,0 +1,19 @@
+# Docker
+
+Copy `.env.docker.example` to `.env`, fill in secrets, then:
+
+```bash
+docker network create traefik-network   # only if it does not exist yet
+docker compose up -d --build
+```
+
+| Service | Container | Exposure |
+|---------|-----------|----------|
+| Bot + FastAPI | `hexahost-bot` | Internal (`bot:8000`) — Discord Gateway outbound |
+| Dashboard | `hexahost-dashboard` | Traefik → `https://bot.hexahost.de` |
+
+Data volumes: `bot-db`, `bot-jsondb`, `bot-logs`.
+
+Discord OAuth redirect: `https://bot.hexahost.de/api/auth/callback/discord`
+
+If your Traefik cert resolver is not named `letsencrypt`, set `TRAEFIK_CERT_RESOLVER` in `.env`. Entrypoints expected: `web` (80) and `websecure` (443).