added info for docker

docs/hero_mdbook_docker.md

@@ -34,6 +34,8 @@ Note that you will need to adjust the local path of the git repo and the docker
 - On a terminal window, create the code repository on the local machine
   ```
   mkdir -p ~/code/git.ourworld.tf/tfgrid
+  cd ~/code/git.ourworld.tf/tfgrid
+  git clone https://git.ourworld.tf/tfgrid/info_tfgrid
   ```
 - Start Hero docker
   ```
@@ -49,26 +51,26 @@ Note that you will need to adjust the local path of the git repo and the docker
   ```
 - Change directory
   ```
-  cd ~/code/git.ourworld.tf/tfgrid
+  cd ~/code/git.ourworld.tf/tfgrid/info_tfgrid
   ```
 - Git configuration
   - Set git lobally with a safe directory
     ```
     git config --global --add safe.directory /root/code/git.ourworld.tf/tfgrid/info_tfgrid
     ```
-- You can now use Hero normally, e.g. with **projectinca**
+- You can now use Hero normally, e.g. with **tech**
   - With a URL:
     ```
-    hero mdbook -u https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript/projectinca
+    hero mdbook -u https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript/tech
     ```
   - With a path:
     ```
-    hero mdbook -p /root/code/git.ourworld.tf/tfgrid/info_tfgrid/heroscript/projectinca
+    hero mdbook -p /root/code/git.ourworld.tf/tfgrid/info_tfgrid/heroscript/tech
     ```
     - In this case, you can modify the mdbook on the local machine's git repo that you set in the prerequisites section and the changes will be shown on the docker path
 - To view the mdbook on your local browser, run the lines:
   ```
-  cd ~/hero/var/mdbuild/projectinca/
+  cd ~/hero/var/mdbuild/tech/
   mdbook serve -n 0.0.0.0
   ```
 - You should be able to view the rendered book at