Launch readme update (#6)

* update repo for launch
* update logo link

Author: sidpalas

README.md

@@ -1,18 +1,16 @@
 # DevOps Directive Docker Course
 
-**NOTE:** The course video will be released to YouTube in Spring 2023!
+This is the companion repo to: [Complete Docker Course - From BEGINNER to PRO! (Learn Containers)](https://youtu.be/RqTEHSBrYFw)
 
-This is the companion repo to: `<INSERT VIDEO LINK>`
-
-`<INSERT THUMBNAIL IMAGE>`
+[![](./readme-assets/thumbnail.jpg)](https://youtu.be/RqTEHSBrYFw)
 
 ## Sponsor
 
-[![](./readme-assets/shipyard-logo.png)](https://shipyard.build)
+[![](./readme-assets/shipyard-logo.png)](https://shipyard.social/mainpage)
 
-Thank you to Shipyard for sponsoring this course. It is because of their support that I am able to provide it to the community free of charge!
+Thank you to Shipyard for sponsoring this course! It is because of their support that I am able to provide it to the community free of charge!
 
-Shipyard is the easiest way to generate on demand ephemeral environments (aka a new environment for every pull request). Check them out at https://shipyard.build/!
+Shipyard is the easiest way to generate on demand ephemeral environments (aka a new environment for every pull request). Sign up today at https://shipyard.social/DevOpsDirectivePromo! The first 300 people to use the promo code "DEVOPSDIRECTIVE" will receive an additional 30 days free on either their startup or business tier plans!
 
 ## [01 - History and Motivation](01-history-and-motivation/README.md)
 
@@ -32,7 +30,7 @@ Before we build our own container images, we can familiarize ourselves with the
 
 ## [05 - Example Web Application](05-example-web-application/README.md)
 
-Learning about containerization is interesting, but without a practical example it isn't very useful. In this section we create a 3 tier web application with a React front end client, two apis (node.js + golang), and a database. The application is as simple as possible while still providing a realistic microservice system to containerize. 
+Learning about containerization is interesting, but without a practical example it isn't very useful. In this section we create a 3 tier web application with a React front end client, two apis (node.js + golang), and a database. The application is as simple as possible while still providing a realistic microservice system to containerize.
 
 ## [06 - Building Container Images](06-building-container-images/README.md)