@Yogesh_Heda i've already got back to you on Intercom. I'm pasting the same reply here so others can take a look and find out how you can build android apps on Buddy:
1) Pick Docker action in Builds
2) Enter Ubuntu as a Docker container instead of 'buddy-default' (choose the Ubuntu version, eg. 16.04).
3) In 'Run commands' enter the commands with which you want to build
4) Go to ''Packages' tab and enter the commands with which you'd be able to install Android SDK