dockerfile updated again 3

Dockerfile

@@ -1,13 +1,15 @@
 ARG BASE_IMAGE=ghcr.io/meta-pytorch/openenv-base:latest
 
-# -------- BUILDER STAGE (Python 3.11) --------
-FROM python:3.11-slim AS builder
+# -------- BUILDER STAGE (Python 3.12) --------
+FROM python:3.12-slim AS builder
 
 WORKDIR /app
 
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends git curl && \
-    rm -rf /var/lib/apt/lists/*
+    apt-get install -y --no-install-recommends \
+        git curl \
+        build-essential \                  
+    && rm -rf /var/lib/apt/lists/*
 
 COPY . /app/env
 WORKDIR /app/env
@@ -38,20 +40,15 @@ FROM ${BASE_IMAGE}
 
 WORKDIR /app
 
-# Copy venv + code
 COPY --from=builder /app/env/.venv /app/.venv
 COPY --from=builder /app/env /app/env
 
-# Use venv
 ENV PATH="/app/.venv/bin:$PATH"
 ENV PYTHONPATH="/app/env:$PYTHONPATH"
 
-# Download NLTK data
 RUN /app/.venv/bin/python -m nltk.downloader wordnet omw-1.4 stopwords punkt averaged_perceptron_tagger_eng punkt_tab
 
-# Health check
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
     CMD curl -f http://localhost:7860/health || exit 1
 
-# Start server
 CMD ["sh", "-c", "cd /app/env && uvicorn server.app:app --host 0.0.0.0 --port 7860"]