diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..7e550e7
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,7 @@
+# CONTRIBUTING
+
+## How to run the Dockerfile locally
+
+```
+docker run -dp 5000:5000 -w /app -v "$(pwd):/app" IMAGE_NAME sh -c "flask run"
+```
diff --git a/Dockerfile b/Dockerfile
index f6b55d6..12f16d8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,6 @@
 FROM python:3.10
-EXPOSE 5000
 WORKDIR /app
 COPY requirements.txt .
-RUN pip install -r requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
 COPY . .
-CMD ["flask", "run", "--host", "0.0.0.0"]
\ No newline at end of file
+CMD ["gunicorn", "--bind", "0.0.0.0:80", "app:create_app()"]
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index c288b79..b1c61dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,5 @@ sqlalchemy
 flask-sqlalchemy
 flask-jwt-extended
 passlib
-flask-migrate
\ No newline at end of file
+flask-migrate
+gunicorn
\ No newline at end of file