Update README.md

[aaronjrodrigues]

version: "3' is not longer needed in docker-compose.yml

{Please select 'base: dev' as target branch above! (you can delete this line)}

Description

I just removed the link version: "3" as it is deprecated by recent docker versions.

Motivation and Context

This allows the compose file to be much more concise since unnecessary lines are removed.

How Has This Been Tested?

This edited compose file has been used on multiple systems for the past few months on various systems (around 5 systems with mostly ubuntu server and Debian)

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.

[PromoFaux]

Thanks for the submission, but this is already sorted in the dev branch (note to self, needs merging to master)

https://github.com/pi-hole/docker-pi-hole/tree/dev