Update Dockerfile

data/Dockerfiles/solr/Dockerfile

@@ -2,7 +2,7 @@ FROM solr:7-alpine
 USER root
 COPY docker-entrypoint.sh /
 
-RUN apk --no-cache add su-exec curl \
+RUN apk --no-cache add su-exec curl tzdata \
   && chmod +x /docker-entrypoint.sh \
   && /docker-entrypoint.sh --bootstrap