chore: add Dockerfile for Hugging Face Spaces deployment

Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.10-slim
+
+# Install system dependencies for OpenCV and scikit-image
+RUN apt-get update && apt-get install -y \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up a new user named "user" with user ID 1000
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
+# Set the working directory to the user's home directory
+WORKDIR /home/user/app
+
+# Copy the requirements file into the container
+COPY --chown=user requirements.txt .
+
+# Install the Python dependencies
+RUN pip install --no-cache-dir --upgrade pip
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the application code into the container
+COPY --chown=user . .
+
+# Hugging Face Spaces expects the app to run on port 7860
+EXPOSE 7860
+
+# Command to run the FastAPI application
+CMD ["uvicorn", "bacterial-classifier.api:app", "--host", "0.0.0.0", "--port", "7860"]