show only warn and error messages on install without other visual noise

.github/workflows/ci-test-frontend.yml

@@ -21,7 +21,7 @@ jobs:
 
       - uses: actions/setup-node@v1
 
-      - run: npm ci
+      - run: npm ci --loglevel warn
         working-directory: ./frontend
 
       - run: npx run-p check lint

Dockerfile

@@ -40,7 +40,7 @@ ENV HUSKY_SKIP_INSTALL=true
 RUN apk add --no-cache --update git
 ADD frontend/package.json /srv/frontend/package.json
 ADD frontend/package-lock.json /srv/frontend/package-lock.json
-RUN cd /srv/frontend && CI=true npm ci
+RUN cd /srv/frontend && CI=true npm ci --loglevel warn
 
 FROM node:10.11-alpine as build-frontend