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+# Caddy Docker image
+
+This image simply provides Caddy precompiled and -installed, ready to use out
+of the box. Additionally, it allows for simple extension with plugins.
+
+## About Caddy
+
+Caddy is a modern implementation of a web server with a focus on security and
+automation with ease of configuration.
+
+You can find out more about Caddy on the official website at
+https://caddyserver.com/.
+
+## Features
+
+- Based on Alpine Linux
+- Transparent usage (the Caddy binary itself is the entrypoint of this image)
+- Easy installation of plugins through scripts shipped with the image
+
+## Usage
+
+This image does not tweak Caddy itself in any way so it will technically run
+exactly as if you were running Caddy directly on the machine aside from the
+usual Docker isolation.
+
+Caddy needs at least a folder containing a website in order to run in a way
+that makes sense. You can mount such a website in as a volume like this:
+
+```sh
+docker run -d -p "2015:2015" -w /data -v /path/to/your/website:/data icedream/caddy
+```
+
+Your website should then be available at http://localhost:2015 according to the
+[official Getting Started guide](https://caddyserver.com/docs/getting-started).
+Configuration can then be done as usual via your own `Caddyfile` in the working
+directory.
+
+## Extension
+
+### Custom image
+
+At some point you may want to put your website code into a custom Docker image
+to go along with Caddy itself. You can realize this idea using a new `Dockerfile`
+which contains at least the following lines:
+
+```dockerfile
+FROM icedream/caddy
+
+WORKDIR /data
+COPY . /data/
+```
+
+### Installing plugins
+
+Additionally to just copying your website into the Docker image you can install
+a custom set of plugins and let the Docker image automatically rebuild Caddy
+with all these plugins for you:
+
+```dockerfile
+RUN docker-caddy-install-plugin \
+  "https://github.com/captncraig/cors.git" \
+  "https://github.com/pyed/ipfilter.git#6b25e48ff3eef8d894f6fca240463f726ee7f7eb" &&\
+  rm -r "${GOPATH}"
+```
+
+Supported syntaxes for sources where to install plugins from are:
+
+- `protocol://server.com/user/repository.git` (will use latest commit on default branch)
+- `protocol://server.com/user/repository.git#reference` (reference can be any branch name, tag, commit hash, etc. to select a specific version of a plugin)
+
+Supported protocols are the same that Git supports (`git`, `https` and `http`).
+
+The last line makes sure to delete the Go workspace folder as an attempt on
+saving space in the final image output.