Learn DOCKERFILE with Real Code Examples

Updated Nov 27, 2025

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Code Sample Descriptions

1

Simple Dockerfile

# docker/demo/Dockerfile
FROM nginx:1.21
COPY ./index.html /usr/share/nginx/html/index.html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

A simple Dockerfile to create an Nginx container image.

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Learn DOCKERFILE | CodeSpeedTest