[TASK] Add usermapping for linux (#360)

Author: ineswillenbrock

Makefile

@@ -11,10 +11,10 @@ codesnippets: ## Regenerate automatic code snippets
 docs: ## Generate projects docs (from "Documentation" directory)
 	mkdir -p Documentation-GENERATED-temp
 
-	docker run --rm --pull always -v "$(shell pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation
+	docker run --user $(shell id -u):$(shell id -g) --rm --pull always -v "$(shell pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation
 
 .PHONY: test-docs
 test-docs: ## Test the documentation rendering
 	mkdir -p Documentation-GENERATED-temp
 
-	docker run --rm --pull always -v "$(shell pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation --no-progress --minimal-test
+	docker run --user $(shell id -u):$(shell id -g) --rm --pull always -v "$(shell pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation --no-progress --minimal-test