Specify solr:7.7.1

[awoods]

Move 'solr-create' command into solr/Dockerfile

Resolves: https://github.com/vivo-community/vivo-docker2/issues/1

Testing this PR

1. Configure your local VIVO in runtime.properties to connect to the MariaDB and Solr found in this project (vivo-docker2)

   VitroConnection.DataSource.url = jdbc:mysql://localhost/vitrodb
   VitroConnection.DataSource.username = vitrodbUsername
   VitroConnection.DataSource.password = vitrodbPassword

   vitro.local.solr.url = http://localhost:8983/solr/vivocore

2. Start VIVO
   • Notice errors due to inability to connect to Solr and DB
3. Start the containers in this project/PR

   $docker-compose build
   $docker-compose up

4. Restart VIVO
   • Notice success
5. Log into VIVO as admin
6. Load sample data
   • https://raw.githubusercontent.com/vivo-project/sample-data/master/sample-data.n3
   • Notice success
7. Verify data in Docker/Solr index
   • http://localhost:8983/solr/#/vivocore/query
8. Verify data in Docker/MariaDB

   $docker exec -it vitrodb /bin/bash
   $mysql -u root -p
     - Note: password: abc123
   $use vitrodb;
   $show tables;
   $select * from Prefixes;
   $select * from Quads;