Add default values to entrypoint.sh

Author: meier-rene

web-frontend/entrypoint.sh

@@ -12,9 +12,9 @@ echo "DISTRIBUTOR_TEXT=$9" >> .env
 echo "DISTRIBUTOR_URL=$10" >> .env
 echo "MB3_FRONTEND_BROWSER_TAB_TITLE=$11" >> .env
 echo "MB3_FRONTEND_HOMEPAGE_INTRO_TEXT=$12" >> .env
-echo "MB3_FRONTEND_HOMEPAGE_NEWS_SECTION_TEXT=$13" >> .env
-echo "MB3_FRONTEND_HOMEPAGE_FUNDING_SECTION_TEXT=$14" >> .env
-echo "MB3_FRONTEND_HOMEPAGE_ADDITIONAL_SECTION_NAME=$15" >> .env
-echo "MB3_FRONTEND_HOMEPAGE_ADDITIONAL_SECTION_TEXT=$16" >> .env
+echo "MB3_FRONTEND_HOMEPAGE_NEWS_SECTION_TEXT=${13:""}" >> .env
+echo "MB3_FRONTEND_HOMEPAGE_FUNDING_SECTION_TEXT=${14:""}" >> .env
+echo "MB3_FRONTEND_HOMEPAGE_ADDITIONAL_SECTION_NAME=${15:""}" >> .env
+echo "MB3_FRONTEND_HOMEPAGE_ADDITIONAL_SECTION_TEXT=${16:""}" >> .env
 
 npm run start