Ultra-lean build: Surgical copy and pinned dependencies

Dockerfile

@@ -1,30 +1,36 @@
 FROM python:3.10-slim
 
-WORKDIR /app
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONPATH=/app \
+    HOME=/home/user
 
-# Install system dependencies
-RUN apt-get update && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
+WORKDIR /app
 
-# Set up user with UID 1000 (Hugging Face standard)
+# Create user
 RUN useradd -m -u 1000 user
-USER user
-ENV HOME=/home/user \
-    PATH=/home/user/.local/bin:$PATH \
-    PYTHONPATH=/app
 
-# Copy requirements first for better caching
+# Copy and install requirements first
 COPY --chown=user requirements.txt .
-RUN pip install --no-cache-dir --user --upgrade -r requirements.txt
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir --user -r requirements.txt
 
-# Copy the application code
-COPY --chown=user . .
+# Add user local bin to path
+ENV PATH="/home/user/.local/bin:${PATH}"
 
-# Ensure app directories exist and are writable
-RUN mkdir -p data/input data/output data/save_pdf logs data/raw_csv_temp data/output_process_data data/strictly_cleaned_data
+# surgically copy only what is needed
+COPY --chown=user telecom_anomaly/ telecom_anomaly/
+COPY --chown=user config/ config/
+COPY --chown=user main.py .
+
+# Create empty directories with right permissions
+RUN mkdir -p data/input data/output data/save_pdf logs data/raw_csv_temp data/output_process_data data/strictly_cleaned_data && \
+    chown -R user:user /app
+
+USER user
 
-# Use 0.0.0.0 and 7860
+# Expose HF default port
 EXPOSE 7860
 
 # Run API

requirements.txt

@@ -1,14 +1,14 @@
 # Core Analysis
-pandas>=1.3.0
-numpy>=1.21.0
-scikit-learn>=1.0.0
-pdfplumber>=0.7.0
+pandas==2.0.3
+numpy==1.24.3
+scikit-learn==1.3.0
+pdfplumber==0.10.2
 
 # API
-fastapi>=0.95.0
-uvicorn>=0.21.0
-python-multipart>=0.0.6
-pydantic>=1.10.0
+fastapi==0.103.1
+uvicorn==0.23.2
+python-multipart==0.0.6
+pydantic==1.10.12
 
 # Export & PDF
-fpdf2>=2.7.0
+fpdf2==2.7.4