Add: Docker default configuration files

- docker/.env - Default environment variables for Docker image
- docker/models.json - Placeholder model (docker-default-model)

These files are intentionally committed despite .gitignore
They are built into the Docker image as fallback configs

Author: sveneisenschmidt

docker/.env

@@ -0,0 +1,6 @@
+PORT=3333
+BEARER_TOKEN=change-me
+N8N_BEARER_TOKEN=
+MODELS_CONFIG=./models.json
+LOG_REQUESTS=false
+SESSION_ID_HEADERS=X-Session-Id,X-Chat-Id,X-OpenWebUI-Chat-Id

docker/models.json

@@ -0,0 +1,4 @@
+{
+  "_comment": "This is a placeholder model built into the Docker image. Mount your own models.json to configure real n8n webhooks.",
+  "docker-default-model": "https://n8n-openai-bridge.invalid/webhook/REPLACE-ME/chat"
+}