Use yarn instead of npm in Makefile

.gitignore

@@ -49,6 +49,7 @@
 /.gitlab-shell-bundle
 /.gitlab-bundle
 /.gitlab-npm
+/.gitlab-yarn
 /gem/*.gem
 /gitlab-runner-config.toml
 /.gdk-install-root

Makefile

@@ -21,7 +21,7 @@ all: gitlab-setup gitlab-shell-setup gitlab-workhorse-setup support-setup gitaly
 # Set up the GitLab Rails app
-gitlab-setup: gitlab/.git gitlab-config bundler .gitlab-bundle .gitlab-npm
+gitlab-setup: gitlab/.git gitlab-config bundler .gitlab-bundle .gitlab-yarn
 gitlab/.git:
 	git clone ${gitlab_repo} gitlab
@@ -51,8 +51,8 @@ gitlab/public/uploads:
 	cd ${gitlab_development_root}/gitlab && bundle install --without mysql production --jobs 4
 	touch $@
-.gitlab-npm:
-	cd ${gitlab_development_root}/gitlab && npm install
+.gitlab-yarn:
+	cd ${gitlab_development_root}/gitlab && yarn install
 	touch $@
 .PHONY:	bundler
@@ -109,7 +109,6 @@ gitlab-update: gitlab/.git/pull gitlab-setup
 	@echo ""
 	cd ${gitlab_development_root}/gitlab && \
 		bundle exec rake db:migrate db:test:prepare
-	cd ${gitlab_development_root}/gitlab && npm prune
 gitlab-shell-update: gitlab-shell/.git/pull gitlab-shell-setup
@@ -312,6 +311,7 @@ clean-config:
 	nginx/conf/nginx.conf \
 unlock-dependency-installers:
-	rm -f .gitlab-npm \
+	rm -f \
 	.gitlab-bundle \
 	.gitlab-shell-bundle \
+	.gitlab-yarn