Dockerfile

# Use Debian as base for reliable MSSQL support
FROM debian:bullseye-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
WORKDIR /app

# Install Python + system dependencies
RUN apt-get update && \
    apt-get install -y curl gnupg2 unixodbc unixodbc-dev gcc g++ python3 python3-pip python3-dev

# Add Microsoft ODBC Driver 17 repo
RUN curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add - && \
    curl https://packages.microsoft.com/config/debian/11/prod.list > /etc/apt/sources.list.d/mssql-release.list && \
    apt-get update && \
    ACCEPT_EULA=Y apt-get install -y msodbcsql17

# Copy dependencies and install Python packages
COPY requirements.txt .
RUN pip3 install --upgrade pip
RUN pip3 install --no-cache-dir -r requirements.txt

# Copy app files
COPY . .

# Expose FastAPI port
EXPOSE 7860

# Run FastAPI app
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]