Fix: Add python-multipart and set HF cache directory

Dockerfile

@@ -1,40 +1,39 @@
-# Use an official Python slim-buster runtime as a parent image
+# Use an official Python runtime as a parent image
 FROM python:3.12-slim
 
 # Set the working directory in the container
 WORKDIR /app
 
-# Install system dependencies including Rust, build tools, pkg-config, cmake, and sentencepiece dev libs using apt-get
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    rustc \
-    cargo \
-    build-essential \
-    pkg-config \
-    cmake \
-    libsentencepiece-dev \
-    # Clean up apt lists to reduce image size
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy only the requirements file first to leverage Docker cache
-COPY backend/requirements.txt /app/requirements.txt
-
-# Install Python dependencies
-RUN pip install --no-cache-dir --upgrade pip
+# --- Set Hugging Face cache directory ---
+# Create a cache directory within the working directory and set HF_HOME
+# This ensures the container has write permissions for downloading models/tokenizers
+RUN mkdir -p /app/.cache
+ENV HF_HOME=/app/.cache
+ENV TRANSFORMERS_CACHE=/app/.cache # Also set TRANSFORMERS_CACHE for good measure
+
+# Copy the requirements file into the container at /app
+# Copy only requirements first to leverage Docker layer caching
+COPY backend/requirements.txt .
+
+# Install any needed packages specified in requirements.txt
+# Add --no-cache-dir to reduce image size
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy the rest of the application code into the container
-COPY backend/ /app/backend
-COPY templates/ /app/templates
-COPY static/ /app/static
+# Copy backend, static, and templates directories
+COPY backend/ ./backend
+COPY static/ ./static
+COPY templates/ ./templates
 
-# Create the necessary directories within the container that the app expects
-RUN mkdir -p /app/templates /app/static /app/uploads
+# Create the uploads directory (ensure it exists)
+RUN mkdir -p /app/uploads
 
-# Grant write permissions to the uploads directory
-RUN chmod -R 777 /app/uploads
-
-# Make port 8000 available
+# Make port 8000 available to the world outside this container
 EXPOSE 8000
 
-# Run main.py using uvicorn
+# Define environment variable (optional, can be set in HF Spaces settings too)
+# ENV MODEL_NAME="Helsinki-NLP/opus-mt-en-ar"
+
+# Run main.py when the container launches
+# Use the backend subdirectory path for the module
 CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "8000"]

backend/requirements.txt

@@ -3,4 +3,5 @@ uvicorn
 python-docx
 PyMuPDF
 transformers[torch]
-sentencepiece # Added for MarianTokenizer
+sentencepiece
+python-multipart # Added for FastAPI form data handling