Ignore build artefacts from project docs.

.gitignore

@@ -1,22 +1,25 @@
-.vscode
+**/.vscode
 __pycache__
 *.swp
 *.vsix
+.netlify
 /carvel-packages/training-platform/bundle/.imgpkg/images.yml
 /carvel-packages/training-platform/bundle/kbld-images.yaml
 /client-programs/bin
 /client-programs/pkg/renderer/files
+/developer-testing
+/project-docs/venv
+/project-docs/_build
 /session-manager/venv
 /secrets-manager/venv
-/tunnel-manager/venv
 /training-portal/venv
 /training-portal/data/db.sqlite3
 /training-portal/data/secret-key.txt
 /training-portal/src/static
+/tunnel-manager/venv
 /workshop-images/base-environment/opt/gateway/build
 /workshop-images/base-environment/opt/gateway/node_modules
 /workshop-images/base-environment/opt/helper/node_modules
 /workshop-images/base-environment/opt/helper/out
 /workshop-images/base-environment/opt/renderer/build
 /workshop-images/base-environment/opt/renderer/node_modules
-/developer-testing