diff --git a/.env.docker.example b/.env.docker.example
index c167275..8fae782 100644
--- a/.env.docker.example
+++ b/.env.docker.example
@@ -56,6 +56,14 @@ MCP_PORT="3001"
 # AI_MODEL_TAGS="gpt-4o-mini"
 # AI_MODEL_EMBEDDING="text-embedding-3-small"
 
+# For Custom OpenAI-compatible provider (OpenRouter, Groq, Together, etc.):
+# AI_PROVIDER_TAGS=custom
+# AI_PROVIDER_EMBEDDING=custom
+# CUSTOM_OPENAI_API_KEY="your-api-key"
+# CUSTOM_OPENAI_BASE_URL="https://openrouter.ai/api/v1"
+# AI_MODEL_TAGS="openai/gpt-4o-mini"
+# AI_MODEL_EMBEDDING="openai/text-embedding-3-small"
+
 # Mixed setup (e.g., Ollama for tags, OpenAI for embeddings):
 # AI_PROVIDER_TAGS=ollama
 # AI_PROVIDER_EMBEDDING=openai