Fix FastAPI import error

Dockerfile

@@ -8,12 +8,15 @@ ENV PATH="/home/user/.local/bin:$PATH"
 # Set working directory
 WORKDIR /app
 
-# Copy and install dependencies
-COPY --chown=user ./requirements.txt requirements.txt
-RUN pip install --no-cache-dir -r requirements.txt
+# Copy all project files to the container then install modules
+COPY --chown=user . .
+RUN pip install --no-cache-dir -r requirements.txt 
 
 # Load environment variables
 ENV ENV_PATH="/app/.env"
 
+# Ensure Python can find the app
+ENV PYTHONPATH=/app
+
 # Run server with uvicorn
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]