Update 'README.md'

README.md

@@ -1,3 +1,16 @@
 # h2database
 
-h2数据库，只一个jar包
+h2数据库，只一个jar包
+
+## Usage
+
+```
+
+# https://github.com/oscarfonts/docker-h2/blob/master/2.1.214/Dockerfile
+
+docker run -d -p 1521:1521 -p 81:81 -v /path/to/local/data_dir:/opt/h2-data -e H2_OPTIONS=-ifNotExists --name=MyH2Instance oscarfonts/h2
+
+
+```
+
+