Updated README.md

README.md

@@ -6,9 +6,7 @@ Created core using:
 
 `docker exec -it solr solr create_core -c epo_data`
 
-Note this fix to ensure that .rtf files can be indexed using Apache Tika: https://gitmemory.com/issue/docker-solr/docker-solr/341/682877640:
-
-Once you've created the core, run these commands:
+Note this fix to ensure that .rtf files can be indexed using Apache Tika: https://gitmemory.com/issue/docker-solr/docker-solr/341/682877640. Once you've created the core, run these commands:
 
 `docker exec -ti --user=solr solr bash -c 'cp -r /opt/solr/example/files/conf/* /var/solr/data/{CORE_NAME}/conf/'`
 
@@ -19,3 +17,5 @@ Add files to Solr using:
 `docker run --rm -v "/Users/ad7588/Downloads/2018 (10381):/2018" --network=host solr:latest post -c epo_data /2018`
 
 Note that on Mac the PHP container has to communicate with the Solr container using the hostname 'host.docker.internal' rather than 'localhost' or '127.0.0.1': https://stackoverflow.com/questions/24319662/from-inside-of-a-docker-container-how-do-i-connect-to-the-localhost-of-the-mach
+
+On Ubuntu, you can use the container name e.g. 'solr' as the Solr hostname in config.env.