Add courses for Docker and Go (#7985)

* add docker tutorial

* add golang course

* fix alphabetical order

* Update courses/free-courses-en.md

* Update courses/free-courses-en.md

Co-authored-by: Sudarshan P <sudarshan.p@quickmetrix.com>
Co-authored-by: Eric Hellman <eric@hellman.net>

courses/free-courses-en.md

@@ -642,6 +642,7 @@
 * [Gophercises: Free Coding Exercises for Budding Gophers](https://gophercises.com) - Jon Calhoun (email address *required*)
 * [Learn Go \| Learn Go Programming](https://golangr.com) - golangr.com
 * [Learn Go Programming - Golang Tutorial for Beginners](https://www.youtube.com/watch?v=YS4e4q9oBaU) - Michael Van Sickle (freeCodeCamp)
+* [Learn Go Programming by Building 11 Projects – Full Course](https://www.youtube.com/watch?v=jFfo23yIWac) - Akhil Sharma  (FreeCodeCamp)
 * [Let's go with golang](https://www.youtube.com/playlist?list=PLRAV69dS1uWQGDQoBYMZWKjzuhCaOnBpa) - Hitesh Choudhary