From 723ac82dfe82ae6caae9f8b5247f61d21bd7e5f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Petazzoni?= <jerome.petazzoni@gmail.com>
Date: Wed, 12 Nov 2025 17:11:22 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9E=95=EF=B8=8F=20Add=20Dockerfile=20example?=
 =?UTF-8?q?=20before=20starting=20to=20write=20our=20own?=
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---
 .../containers/Building_Images_With_Dockerfiles.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/slides/containers/Building_Images_With_Dockerfiles.md b/slides/containers/Building_Images_With_Dockerfiles.md
index 38acaece..0a23be46 100644
--- a/slides/containers/Building_Images_With_Dockerfiles.md
+++ b/slides/containers/Building_Images_With_Dockerfiles.md
@@ -29,6 +29,20 @@ At the end of this lesson, you will be able to:
 
 ---
 
+## `Dockerfile` example
+
+```
+FROM python:alpine
+WORKDIR /app
+RUN pip install Flask
+COPY rng.py .
+ENV FLASK_APP=rng FLASK_RUN_HOST=:: FLASK_RUN_PORT=80
+CMD ["flask", "run"]
+EXPOSE 80
+```
+
+---
+
 ## Writing our first `Dockerfile`
 
 Our Dockerfile must be in a **new, empty directory**.