Merge pull request 'new' (!156) from dev_docs into development

Reviewed-on: #156

docs/hero_mdbook_docker.md

@@ -5,6 +5,7 @@
 - [Introduction](#introduction)
 - [Prerequisites](#prerequisites)
 - [Steps](#steps)
+- [Update the Book](#update-the-book)
 
 ---
 
@@ -90,3 +91,23 @@ Note that you will need to adjust the local path of the git repo and the docker
     ```
     docker pull ghcr.io/scottyeager/hero:latest
     ```
+
+## Update the Book
+
+You can use [VSCodium](https://manual.grid.tf/documentation/system_administrators/computer_it_basics/git_github_basics.html#vs-codium) to update files of the Mdbook.
+
+- Open VSCodium
+- Open the directory where the repo is located, e.g. 
+  ```
+  cd ~/code/git.ourworld.tf/tfgrid/info_tfgrid
+  ```
+- Make changes and save the files
+- Redeploy Hero Mdbook
+  - With a path:
+    ```
+    hero mdbook -p /root/code/git.ourworld.tf/tfgrid/info_tfgrid/heroscript/tech
+    ```
+  - With a URL (make sure to pull the changes with `git pull`):
+    ```
+    hero mdbook -u https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript/tech
+    ```