# Examples for Custom Data Flow Server Build
This is an example for both gradle and maven to build a custom Data Flow Server
adding MySQL driver to a build.
To verify these example builds, you can run `build-and-compare` which will
print differences compared to main releases server jar. If successful you
should see executable jars to differ only with added mysql driver.
```
$ ./test/build-and-compare
Diff gradle build
95a96
> BOOT-INF/lib/mysql-connector-java-8.0.16.jar
Diff maven build
95a96
> BOOT-INF/lib/mysql-connector-java-8.0.16.jar
```
2d0c3cd5d7