Claude Code: optimize Dockerfile for cold start - combine COPY layers, remove uvicorn extras

Dockerfile

@@ -1,4 +1,4 @@
-# Minimal Python Dockerfile for Cain - fixed openclaw import
+# Minimal Python Dockerfile for Cain - fast cold start
 FROM python:3.9-slim
 
 # Build metadata
@@ -8,16 +8,13 @@ LABEL port="7860"
 
 WORKDIR /app
 
+# Copy requirements and install (layer cache optimization)
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY app.py .
-COPY error_handlers.py .
-COPY openclaw.json .
-COPY openclaw/.openclaw /app/openclaw
+# Copy all application files in one layer
+COPY app.py error_handlers.py openclaw.json openclaw/.openclaw /app/
 COPY static/ /app/static/
-
-# Create logs directory
 RUN mkdir -p /app/logs
 
 ENV PORT=7860

requirements.txt

@@ -1,5 +1,5 @@
 fastapi>=0.104.0
-uvicorn[standard]>=0.24.0
+uvicorn>=0.24.0
 huggingface_hub>=0.24.5
 psutil>=5.9.0
 python-json-logger>=2.0.7