Merge branch 'upgrade-n-fix' into 'master'

.gitlab-ci.yml

Dockerfile

README.md

build.ps1

docs/3d/hasznos-oldalak.md

docs/grafika/grafika-hasznos.md

docs/grafika/hasznos-oldalak.md

docs/index.md

docs/schdesign/oldalaink.md

docs/schdesign/todo.md

docs/schdesign/tutorial/hozzajarulas.md

docs/web/hasznos-oldalak.md

docs/web/tutorial/editor/index.md

docs/web/tutorial/editor/vscode.md

docs/web/tutorial/editor/webstorm.md

mkdocs.yml

run.ps1