Update Dockerfile

Dockerfile

@@ -3,28 +3,55 @@ FROM python:3.11-slim-bookworm
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
     PIP_NO_CACHE_DIR=1 \
-    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false
+    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false \
+    # keep caches & matplotlib writable in containerized envs
+    XDG_CACHE_HOME=/tmp/.cache \
+    MPLCONFIGDIR=/tmp/matplotlib
 
 WORKDIR /app
 
-# system deps (keep minimal; drop build-essential if not building wheels)
+# --- System deps: build tools + curl/wget and basic CA certs
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    curl git ca-certificates \
+    build-essential curl wget ca-certificates \
  && rm -rf /var/lib/apt/lists/*
 
-# python deps (better cache behavior)
+# --- Build and install TA-Lib C library (0.4.0) ---
+#     The Python package needs this shared lib present at runtime.
+RUN wget -O ta-lib-0.4.0-src.tar.gz http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz \
+ && tar -xzf ta-lib-0.4.0-src.tar.gz \
+ && cd ta-lib-0.4.0 \
+ && ./configure --prefix=/usr \
+ && make -j"$(nproc)" \
+ && make install \
+ && cd .. \
+ && rm -rf ta-lib-0.4.0 ta-lib-0.4.0-src.tar.gz \
+ && ldconfig
+
+# --- Python deps in a safe order ---
+# 1) Upgrade pip
+RUN python -m pip install --upgrade pip
+
+# 2) Copy requirements and install numpy first (headers available)
 COPY requirements.txt .
-RUN python -m pip install --upgrade pip \
- && pip install --no-cache-dir --prefer-binary -r requirements.txt
 
-# your code
+#    Install NumPy 1.26.4 explicitly first
+RUN pip install --no-cache-dir --prefer-binary "numpy==1.26.4"
+
+# 3) Install TA-Lib wrapper WITHOUT build isolation (so it uses the numpy we just installed)
+RUN pip install --no-cache-dir --prefer-binary --no-build-isolation "TA-Lib==0.4.24"
+
+# 4) Install the rest
+RUN pip install --no-cache-dir --prefer-binary -r requirements.txt
+
+# --- Your app code ---
 COPY . .
 
 ENV PORT=7860
 EXPOSE 7860
 
-# healthcheck helps detect boot issues
+# Healthcheck to help Spaces detect boot issues quickly
 HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
   CMD curl --fail http://127.0.0.1:${PORT}/_stcore/health || exit 1
 
-CMD ["sh", "-c", "streamlit run app.py --server.address=0.0.0.0 --server.port=${PORT}"]
+# Streamlit entrypoint
+CMD ["sh", "-c", "streamlit run app.py --server.address=0.0.0.0 --server.port=${PORT} --server.headless=true"]