Update free-courses-en.md

[AgilAghamirzayev]

What does this PR do?

Add resource(s) | Remove resource(s) | Add info | Improve repo

For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• Read our contributing guidelines
• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction)

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[AgilAghamirzayev]

Add Docker list two resource

[eshellman]

For youtube, we prefer "playlist" links and the name of the producer/creator. https://github.com/EbookFoundation/free-programming-books/blob/master/CONTRIBUTING.md#platforms-and-access-notes

Pleas close the other PR

[davorpa]

@eshellman

For youtube, we prefer "playlist" links and the name of the producer/creator. https://github.com/EbookFoundation/free-programming-books/blob/master/CONTRIBUTING.md#platforms-and-access-notes

Both are 3h videos with chapters integrated in timeline, so it's ok for me 😉

Pleas close the other PR

PR #6862 closed as duplicated

[eshellman]

Thanks, and welcome to free-programming-books!