- add docker section to readme

README.md

@@ -62,6 +62,36 @@ However, hook defined like that could pose a security threat to your system, bec
 # Examples
 Check out [Hook examples page](https://github.com/adnanh/webhook/wiki/Hook-Examples) for more complex examples of hooks.
 
+# Running webhook in Docker
+The simplest usage of [adnanh/webhook](https://hub.docker.com/r/adnanh/webhook/) image is for one to host the hooks JSON file on their machine and mount the directory in which those are kept as a volume to the Docker container:
+```shell
+docker run -d -p 9000:9000 -v /dir/to/hooks/on/host:/etc/webhook --name=webhook \
+  adnanh/webhook -verbose -hooks=/etc/webhook/hooks.json -hotreload
+```
+
+Another method of using this Docker image is to create a simple `Dockerfile`:
+```docker
+FROM adnanh/webhook
+COPY hooks.json.example /etc/webhook/hooks.json
+```
+
+This `Dockerfile` and `hooks.json` files should be placed inside the same directory. After that run `docker build -t my-webhook-image .` and then start your container:
+```shell
+docker run -d -p 9000:9000 --name=webhook my-webhook-image -verbose -hooks=/etc/webhook/hooks.json -hotreload
+```
+
+Additionally, one can specify the parameters to be passed to [webhook](https://github.com/adnanh/webhook/) in `Dockerfile` simply by adding one more line to the previous example:
+```docker
+FROM adnanh/webhook
+COPY hooks.json.example /etc/webhook/hooks.json
+CMD ["-verbose", "-hooks=/etc/webhook/hooks.json", "-hotreload"]
+```
+
+Now, after building your Docker image with `docker build -t my-webhook-image .`, you can start your container by running just:
+```shell
+docker run -d -p 9000:9000 --name=webhook my-webhook-image
+```
+
 # Contributing
 Any form of contribution is welcome and highly appreciated.