Merge branch '563-enable-test-coverage-in-local-analysis' into 'master'

enable local test coverage analysis

Closes #563

See merge request arsnova/frag.jetzt!502

analysis/Dockerfile

 FROM sonarsource/sonar-scanner-cli:4
 
 RUN apk add --no-cache curl
+RUN apk add --no-cache chromium
+
+ENV CHROME_BIN=/usr/bin/chromium-browser

analysis/entrypoint.sh

@@ -56,4 +56,6 @@ fi
 
 npm i
 
+npm test
+
 sonar-scanner