Update README.md

Update Docker Environment

README.md

@@ -70,7 +70,25 @@ After the JDK environment is ready, [download](https://pan.baidu.com/s/1dzk7SU)
 
 * Windows: `java -cp "WEB-INF/lib/*;WEB-INF/classes" org.b3log.solo.Starter`
 * Unix-like: `java -cp "WEB-INF/lib/*:WEB-INF/classes" org.b3log.solo.Starter`
-* Docker: `docker run --name solo -e SERVER_NAME=b3log.org -p 8080:8080 -v /path/backup:/opt/b3log/backup/ -d 88250/solo:2.7.0`
+
+Run with docker? `docker run --name solo -e SERVER_NAME=b3log.org -p 8080:8080 -v /path/backup:/opt/b3log/backup/ -d 88250/solo:2.7.0`
+
+| Environment | Description | Optional Value | Default Value |
+| ------------- | ------------- | ------------- | ------------- |
+| DATABASE_TYPE | Database Type, H2 or MySQL | h2, mysql | h2 |
+| DATABASE_HOST | Database Server host or ip,Only for MySQL |  | localhost |
+| DATABASE_PORT | Database Port,Only for MySQL |   | 3306 |
+| DATABASE_NAME | Database Name,Only for MySQL |   | solo |
+| DATABASE_USERNAME | Database Username,Only for MySQL |   | root |
+| DATABASE_PASSWORD | Database Password,Only for MySQL |   |   |
+| SERVER_SCHMEA | Server schema | https,http | http |
+| SERVER_NAME | Server Name or Domain Name |   | localhost |
+| EMAIL_ADDRESS | Email Address |   |   |
+| EMAIL_PASSWORD | Email Password |   |   |
+| SMTP_HOST | SMTP Server Host |   | smtp.gmail.com |
+| SMTP_PROT | SMTP Server Port |   | 587 |
+| SMTP_SOCKETFACTORY_PORT | SMTP Socket Factory Port |   | 465 |
+
 
 **See the [Solo User Guide](https://hacpai.com/article/1492881378588) for more details. In addition, if you want to use Solo but do not want to maintain the server yourself, you can purchase our built Solo and [use it directly](https://b3log.org/services/#solo).**