Made Docker Compose configuration more flexible.

.gitignore

@@ -1,4 +1,2 @@
 .DS_Store
 config.env
-
-solrdata

docker-compose.yml

@@ -19,8 +19,7 @@ services:
       - '8080:80'
     volumes:
       - ./nginx-conf:/etc/nginx/conf.d
-    volumes_from:
-      - php
+      - ./site:/var/www/html
 
   solr:
     container_name: solr
@@ -28,4 +27,7 @@ services:
     ports:
       - '8983:8983'
     volumes:
-      - ./solrdata:/var/solr
+      - solrdata:/var/solr
+
+volumes:
+  solrdata: