Merge pull request #2331 from jhesketh/patch-4

Fix building solr

data/Dockerfiles/solr/Dockerfile

@@ -7,6 +7,7 @@ COPY solr-schema-7.7.0.xml /
 
 RUN apk --no-cache add su-exec curl tzdata \
   && chmod +x /docker-entrypoint.sh \
+  && sync \
   && bash /docker-entrypoint.sh --bootstrap
 
 ENTRYPOINT ["/docker-entrypoint.sh"]