Problem scenario
You installed Nginx in a Docker container on a RedHat Linux server. You go to this container with a web browser and see the default screen. Where is the default file (on the back-end) that users see from the front-end by default that says "Welcome to nginx!"?
Solution
This is the name and location of the file (assuming the Docker container was created via the public repository):
/usr/share/nginx/html/index.html