This provides a brief tutorial for creating a Woodpecker webhook plugin, using simple shell scripting, to make an http requests during the build pipeline.
## What end users will see
The below example demonstrates how we might configure a webhook plugin in the Yaml file:
Create a simple shell script that invokes curl using the Yaml configuration parameters, which are passed to the script as environment variables in uppercase and prefixed with `PLUGIN_`.
```bash
#!/bin/sh
curl \
-X ${PLUGIN_METHOD} \
-d ${PLUGIN_BODY} \
${PLUGIN_URL}
```
## Package it
Create a Dockerfile that adds your shell script to the image, and configures the image to execute your shell script as the main entrypoint.
```dockerfile
FROM alpine
ADD script.sh /bin/
RUN chmod +x /bin/script.sh
RUN apk -Uuv add curl ca-certificates
ENTRYPOINT /bin/script.sh
```
Build and publish your plugin to the Docker registry. Once published your plugin can be shared with the broader Woodpecker community.
```nohighlight
docker build -t foo/webhook .
docker push foo/webhook
```
Execute your plugin locally from the command line to verify it is working:
