Restoring a corrumpt index file from a previous version of the tutorial.

Author: klust

docs/2021-lust/index.md

@@ -2,4 +2,24 @@
 
 Overview page of the introductory tutorial on [EasyBuild](https://easybuild.io) for the *[LUMI](https://www.lumi-supercomputer.eu) User Support team (LUST)*.
 
-The tutorial is available on [the EasyBuilders tutoral web site](https://easybuilders.github.io/easybuild-tutorial/2021-lust/).
+- [Part I: **Introduction to EasyBuild**](part1_intro.md) *(Tue March 9th 2021, 9am-12 CET)*
+    * [What is EasyBuild?](what_is_easybuild.md)
+    * [Terminology](terminology.md)
+    * [Installation](installation.md) *(hands-on)*
+    * [Configuration](configuration.md) *(hands-on)*
+    * [Basic usage](basic_usage.md) *(hands-on)*
+- [Part II: **Using EasyBuild**](part2_using.md) *(Tue March 23rd 2021, 9am-12 CET)*
+    * [Troubleshooting](troubleshooting.md) *(hands-on)*
+    * [Creating easyconfig files](creating_easyconfig_files.md) *(hands-on)*
+    * [Implementing easyblocks](implementing_easyblocks.md) *(hands-on)*
+- [Part III: **Advanced topics**](part3_advanced.md) *(Tue March 30th 2021, 9am-12 CEST)*
+    * [Using EasyBuild as a library](easybuild_library.md) *(hands-on)*
+    * [Using hooks to customise EasyBuild](hooks.md) *(hands-on)*
+    * [Submitting installations as Slurm jobs](slurm_jobs.md) *(hands-on)*
+    * [Module naming schemes (incl. hierarchical)](module_naming_schemes.md) *(hands-on)*
+    * [GitHub integration to facilitate contributing to EasyBuild](github_integration.md) *(hands-on)*
+- [Part IV: **EasyBuild on Cray systems**](part4_cray.md) *(Friday June 18th 2021, 09-12 CEST)*
+    * [Introduction to Cray Programming Environment](cray/introduction.md) *(hands-on)*
+    * [Cray External Modules](cray/external_modules.md) *(hands-on)*
+    * [Cray Custom Toolchains](cray/custom_toolchains.md) *(hands-on)*
+    * [EasyBuild at CSCS](cray/easybuild_at_cscs.md) *(hands-on)*