I am sorry. To create a docker container using nginx you can run `docker run nginx`. If you have webpages to serve from the container, you can mount them with a volume using `docker run -v /my/webpages:/usr/share/nginx/html:ro`. To expose the container on the host, you can use `docker run -p 8080:80 nginx`. 

If instead you would like to create a docker image based on nginx to serve some webpages, first create a file called `Dockerfile`.
Then add the following contents:

```
FROM nginx
COPY my/webpages /usr/share/nginx/html
```

Run `docker build -t my-nginx` to build the image, and `docker run my-nginx` to run the container.
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