Update Dockerfile

Dockerfile

@@ -5,6 +5,12 @@ ENV AI_PROVIDER google
 ENV GOOGLE_BASE_URL https://generativelanguage.googleapis.com/v1beta
 ENV AI_MODEL gemini-3-flash-preview
 ENV GOOGLE_GENERATIVE_AI_API_KEY AIzaSyBV-UZd_aUjHjRb4R_cNHBtAhGPjoYf4DU
+ENV GOOGLE_CANDIDATE_COUNT 1                   # Optional: Number of candidates to generate
+ENV GOOGLE_TOP_K 40                            # Optional: Top K sampling parameter
+ENV GOOGLE_TOP_P 0.95                          # Optional: Nucleus sampling parameter
+# Note: Gemini 2.5/3 models automatically enable reasoning display (includeThoughts: true)
+ENV GOOGLE_THINKING_BUDGET 8192                # Optional: Gemini 2.5 thinking budget in tokens (for more/less thinking)
+ENV GOOGLE_THINKING_LEVEL high                 # Optional: Gemini 3 thinking level (low/high)
 
 ENV PORT 7860
 EXPOSE 7860