Here's a Dockerfile that will install Nginx and copy a simple HTML file with the content "Hello John" to the /usr/share/nginx/html directory:

FROM nginx:latest

COPY index.html /usr/share/nginx/html/

You'll need to create an index.html file with the content "Hello John" in the same directory as the Dockerfile.

Once you have those two files, you can build the Docker image by running the following command in the same directory as the Dockerfile:

docker build -t my-nginx-image .

This will create a Docker image with the tag "my-nginx-image".

To run a container using this image, you can use the following command:

docker run -d -p 8080:80 my-nginx-image

This will start a container in detached mode (-d), exposing port 8080 on the host machine (-p 8080:80) and using the my-nginx-image Docker image.

Now, if you open a web browser and navigate to http://localhost:8080, you should see a simple homepage that says "Hello John"!
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence