diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..729428b
--- /dev/null
+++ b/Dockerfile
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+# backend/Dockerfile
+FROM python:3.11-slim
+
+RUN addgroup --system app && adduser --system --ingroup app app
+
+WORKDIR /srv/app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+# Assurer permissions
+RUN chown -R app:app /srv/app
+
+USER app
+
+# Port interne
+EXPOSE 5000
+
+# Variable d'environnement par défaut
+ENV FLASK_ENV=production
+ENV GUNICORN_WORKERS=3
+ENV GUNICORN_THREADS=2
+
+# Commande de démarrage via gunicorn (attache l'app Flask : app:app)
+# Utilise timeout raisonnable, bind sur 0.0.0.0:5000
+CMD ["sh", "-c", "gunicorn --workers ${GUNICORN_WORKERS} --threads ${GUNICORN_THREADS} --bind 0.0.0.0:5000 --access-logfile - --error-logfile - 'main:app'"]
diff --git a/requirements.txt b/requirements.txt
index f0bb836..c4b02c4 100644
Binary files a/requirements.txt and b/requirements.txt differ