update the import dashboards sidekick to 6.3.2

jhipster-import-dashboards/Dockerfile

@@ -1,8 +1,8 @@
-FROM docker.elastic.co/beats/metricbeat:6.2.2
-COPY dashboards /tmp
+FROM docker.elastic.co/beats/metricbeat:6.3.2
 WORKDIR /usr/share/metricbeat/
+COPY dashboards/ ./
 COPY wait-for-elasticsearch.sh ./
 ENV ELASTICSEARCH_URL=http://jhipster-elasticsearch:9200
 ENV KIBANA_URL=http://jhipster-console:5601
 
-CMD ./wait-for-elasticsearch.sh  && ./metricbeat setup --dashboards -E output.elasticsearch.hosts="[$ELASTICSEARCH_URL]" -E setup.kibana.host=$KIBANA_URL -E setup.dashboards.directory=/tmp
+CMD ./wait-for-elasticsearch.sh  && ./metricbeat setup --dashboards -E output.elasticsearch.hosts="[$ELASTICSEARCH_URL]" -E setup.kibana.host=$KIBANA_URL -E setup.dashboards.directory=/usr/share/metricbeat/import