Improvements to CI: comment on PR when syntax checking fails

scripts/ci/frontend-build

@@ -0,0 +1,17 @@
+#!/bin/bash -e
+
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+. "$DIR/../.common.sh"
+
+DOCKER_IMAGE=nginxproxymanager/nginx-full:certbot-node
+
+# Ensure docker exists
+if hash docker 2>/dev/null; then
+	docker pull "${DOCKER_IMAGE}"
+	cd "${DIR}/../.."
+	echo -e "${BLUE}❯ ${CYAN}Building Frontend ...${RESET}"
+	docker run --rm -e CI=true -v "$(pwd)/frontend:/app/frontend" -v "$(pwd)/global:/app/global" -w /app/frontend "$DOCKER_IMAGE" sh -c "yarn install && yarn build && yarn build && chown -R $(id -u):$(id -g) /app/frontend"
+	echo -e "${BLUE}❯ ${GREEN}Building Frontend Complete${RESET}"
+else
+	echo -e "${RED}❯ docker command is not available${RESET}"
+fi