Add Happy-hour-007 slides+recording

Author: Richard Top

docs/training-events/2025/EESSI-happyhour-2025-007-Navigating-EESSI-GitHub-Repositories.pdf

@@ -6,6 +6,13 @@ Find slides, and video recordings of earlier sessions below.
 
 # Topic series: A peek inside EESSI layers
 
+### Monday 29 September 2025 - Navigating the EESSI GitHub Repositories
+
+**Outline:** Navigating the EESSI GitHub Repositories
+([Slides (PDF)](EESSI-happyhour-2025-007-Navigating-EESSI-GitHub-Repositories.pdf), [Recording (YouTube)](https://youtu.be/_oaFYeYt9H4))
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/e2r7yjVr_pM?si=7sOGGsKxvZgVOFfI" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
 ### Monday 22 September 2025 - Deeper look into EESSI compat and software layers
 
 **Outline:** Deeper look into EESSI compat and software layers
@@ -30,22 +37,19 @@ Find slides, and video recordings of earlier sessions below.
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/4HlcXJPOlBE?si=L_wA-D-r--3La_Ou" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
-
 ### Monday 01 September 2025 - Explore other ways to access EESSI
 
 **Outline:** Explore other ways to access EESSI ([slides (PDF)](EESSI-happyhour-2025-003-Other-ways-accessing-EESSI.pdf), [recording (YouTube)](https://www.youtube.com/watch?v=_UrXbZI1lE4))
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/_UrXbZI1lE4?si=4PoYoAevRjCen59k" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
-
 ### Monday 25 August 2025 – Accessing EESSI using container script
 
 **Outline:** A walkthrough of accessing EESSI via the [EESSI container script](../../getting_access/eessi_container.md)
 ([Slides (PDF)](EESSI-happyhour-2025-002-Accessing-EESSI-using-container-script.pdf), [Recording (YouTube)](https://www.youtube.com/watch?v=MAgWwj27i9U))
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/MAgWwj27i9U?si=SOD3hMOVIF3N6hdo" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
-
 ### Monday 18 August 2025 – Installing and configuring CernVM-FS
 
 **Outline:** Access EESSI repository through [installing and configuring CernVM-FS](../../getting_access/native_installation.md)

docs/training-events/2025/happy-hours-previous-sessions.md

@@ -31,16 +31,16 @@ If you haven't joined the EESSI Slack yet, [click here to join](https://join.sla
 
 ---
 
-### 💡 **Next Session**: Navigating the EESSI GitHub Repositories
-### Topic Series: A peek inside EESSI layers
+### 💡 **Next Session**: Controlling EESSI Startup Behavior
+### Topic Series: Environment variables to tweak EESSI Initialization 
 🗓️ Schedule
-#### Monday 29 September 2025, 14:00-15:00 CE(S)T
+#### Monday 06 October 2025, 14:00-15:00 CE(S)T
 
 ---
 
-### Upcoming sessions in the topic series: A peek inside EESSI layers
+### Upcoming sessions in the topic series: Environment variables to tweak EESSI Initialization 
 ###### Outline
-- 29 September 2025 -  Navigating the EESSI GitHub Repositories
+- 06 October 2025 - Controlling EESSI Startup Behavior
 
 ---
 
@@ -54,6 +54,8 @@ See the full Recordings, slides, and materials here: [Previous Sessions & Videos
 
 *Topic series: A peek inside EESSI layers*
 
+- 29 September 2025 - [Navigating the EESSI GitHub Repositories](https://youtu.be/e2r7yjVr_pM)
+
 - 22 September 2025 - [Deeper look into EESSI compat and software layers](https://youtu.be/_oaFYeYt9H4)
 
 - 15 September 2025 - [EESSI design overview](https://youtu.be/esYU6atzfek)