---
title: "Fly Friday - Customizing with Dockerfiles"
---

# Fly Friday - Customizing with Dockerfiles

Last week’s Fly Friday video showed how you can simply deploy a Docker image to Fly. Today, we’ll show how straightforward it is to customize that deployed image with Fly.

We deployed Docker’s official httpd image in [our first Fly Friday video](https://fly.io/blog/fly-friday-flyctl-and-ports/). That image, when run, serves up files from its `/usr/local/apache2/html`. By default the image contains the words “It works”. If we want it to say something else, we need to copy our content into that directory.

To do that we use a Dockerfile that is just two lines long.

```
FROM httpd:2.4
COPY ./public_html/  /usr/local/apache2/htdocs/
```

The Dockerfile contains all the instructions needed to create our new image. The `FROM` says take the Docker httpd image and use it as a base for our new image. The `COPY` says copy the contents of a local directory into `/usr/local/apache2/html/` within the new image. Fly will then deploy that new image.

We’ll also have to create the `public_html` directory and put some HTML content in there.

Want to see all this in action? Watch this Fly Friday video:

*Want to learn more about Fly? Head over to our [Fly Docs](https://docs.fly.io) for lots more, including a [Hands On](https://docs.fly.io/getting-started/launch-demo) where you can get a free account and deploy your first app today.*