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Alpine Linux Docker Container running Caddyserver

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# Caddy Server on Alpine Linux

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This is a [Docker](https://www.docker.com/) image for [Caddyserver](https://caddyserver.com/). This image runs with a base of [Alpine-Linux](http://www.alpinelinux.org/) making it extremely small, secure and fast.

This image can also be found on [Docker Hub](https://hub.docker.com/r/zzrot/alpine-caddy/).

## Usage
We recommend using our images in conjunction with [Docker-Compose](https://docs.docker.com/compose/). This allows for easier creation of containers with the proper volumes and ports enabled.

We have included an [example docker-compose](https://github.com/ZZROTDesign/alpine-caddy/tree/master/examples/docker-compose.example.yml) file for use in a real project.

This image works with two defaults

1. A default [Caddyfile](https://github.com/ZZROTDesign/alpine-caddy/tree/master/Caddyfile)
2. A default location inside the container for static files: /var/www/html

In order to use this image, we recommend running it with a volume connecting your static files to the root location of the docker file:

docker run -d -p 80:80 -v $(pwd)/public:/var/www/html zzrot/alpine-caddy

The server will be available at your.docker.machine.ip.

This is the bare minimum needed to use this image. Although further customization is made easier with a docker-compose file.

The benefits of building an image with a overrideable Caddyfile are that you can   include your own by including another volume. To see a fully configured docker-compose file see this [example](https://github.com/ZZROTDesign/alpine-caddy/tree/master/examples/docker-compose.example.yml).

For writing a custom Caddyfile please read [this](https://caddyserver.com/docs/caddyfile).

### Middleware

Alpine-Caddy includes all Caddy Middleware and features. You can read more on these specific features in the [Caddy User Guide](https://caddyserver.com/docs).

### Caddy as a reverse proxy

This image can also effectively be used as a reverse proxy. Included in the examples/ folder is an [example Caddyfile](https://github.com/ZZROTDesign/alpine-caddy/tree/master/examples/Caddyfile.proxy.example).

The [example docker-compose](https://github.com/ZZROTDesign/alpine-caddy/tree/master/examples/docker-compose.proxy-example.yml) shows how to include your custom Caddyfile as a volume as well as an example proxy set up with containers.

## Volumes

Alpine-Caddy has three locations where volumes can be linked to.

### Static Files

In order to serve static content, alpine-caddy needs to be able to access your static files from inside of the container. To do this, link the directory of your static files with /var/www/html inside of the container.

For docker-compose.yml files, under the volumes declaration, include:

-  ./public:/var/www/html

docker run -v $(pwd)/public:/var/www/html

### Custom Caddyfile

To upload a custom Caddyfile, link your Caddyfile to the directory /etc/Caddyfile in the container.
For docker-compose.yml files, under the volumes declaration, include:

-  ./Caddyfile:/etc/Caddyfile

docker run -v $(pwd)/Caddyfile:/etc/Caddyfile zzrot/alpine-caddy

### Certificate Persistance

If you use alpine-caddy to generate SSL certificates from [Let's Encrypt](https://letsencrypt.org/), you should persist those certificates outside of the container. In the instance of a container failure, this allows the container to reuse the same certificates, instead of generating new ones from Let's Encrypt.

For information on including this into your Caddyfile see the [Caddyfile tls specification](https://caddyserver.com/docs/tls).

The certificates are stored in /root/.caddy inside of the container, and thus you must connect an outside directory to that directory to allow persistance. For docker-compose.yml files, under the volumes declaration, include:

-  ./.caddy:/root/.caddy

docker run -v $(pwd)/.caddy:/root/.caddy

## Contributing to Alpine-Caddy

### Team members

* [Sean Kilgarriff](https://github.com/Skilgarriff) sean@zzrot.com T: [@seankilgarriff](https://twitter.com/SeanKilgarriff)
* [Killian Brackey](https://github.com/killianbrackey) killian@zzrot.com T: [@kmbrackey](https://twitter.com/kmbrackey)

Don't hesitate to get in contact with either one of us with problems, questions, etc.

### Adding new features

* Fork it!
* Create your feature branch: git checkout -b my-new-feature
* Commit your changes: git commit -am 'Add some feature'
* Push to the branch: git push origin my-new-feature
* Submit a pull request :D

Don’t get discouraged! We estimate that the response time from the
maintainers is around: 24 hours.

### Reporting Security Issues

If you discover a security issue in this Docker image, please report it by sending an email to docker@zzrot.com

This will allow us to assess the risk, and make a fix available before we add a bug report to the GitHub repository.

Thanks for helping make this image safe for everyone!

### License

The code is available under the [MIT License](https://github.com/ZZROTDesign/alpine-caddy/tree/master/LICENSE).

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