Add dockerfile to build serving image

Dockerfile

@@ -0,0 +1,47 @@
+###########
+# BUILDER #
+###########
+
+FROM python:3.11.6-slim-bullseye AS builder
+
+# Set working directory
+WORKDIR /app
+
+# Install dependencies
+COPY ./setup.py setup.py
+COPY ./cornac cornac
+COPY ./README.md README.md
+
+RUN pip install --upgrade pip
+RUN pip install Cython numpy scipy
+
+RUN apt-get update && \
+    apt-get -y --no-install-recommends install gcc g++
+
+RUN pip install --no-cache-dir . # install cornac
+
+##########
+# RUNNER #
+##########
+
+FROM python:3.11.6-slim-bullseye AS runner
+
+WORKDIR /app
+
+# Set environment variables
+ENV MODEL_PATH=""
+ENV MODEL_CLASS=""
+ENV PORT=5000
+
+COPY --from=builder /app/cornac cornac
+COPY --from=builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages
+
+RUN apt-get update && \
+    apt-get -y --no-install-recommends install gcc g++ && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN pip install --no-cache-dir Flask gunicorn
+
+WORKDIR /app/cornac/serving
+
+CMD ["gunicorn", "app:app"]