# Use the official lightweight Nginx image from Docker Hub.
# The 'alpine' tag means it's based on the small Alpine Linux distribution.
FROM nginx:alpine

# Set the working directory to the default Nginx web root.
# Any subsequent COPY commands will be relative to this directory.
WORKDIR /usr/share/nginx/html

# Copy the website files from your local machine (the build context)
# into the working directory inside the container.
# This assumes your index.html, profile.jpg, and favicon.png
# are in the same directory as this Dockerfile.
COPY index.html profile.jpg favicon.png ./

# Expose port 80 on the container. This is the default port for HTTP traffic
# that Nginx listens on. You will map this to a host port when you run the container.
EXPOSE 80

# The default command for the nginx image is to start the server.
# However, it's good practice to specify it for clarity.
# This command starts nginx in the foreground, which is standard for containers.
CMD ["nginx", "-g", "daemon off;"]