Guide for deploying Apache Doris in one/three vitrual machines by script or docker.

• Platform: JDK 11
• Database: Doris v2.0.12

• one frontend, one backend and one broker in one vm (refer to doris-in-one-script.md)

• build doris image fe/be/broker (refer to doris-build-image.md)

• one frontend, one backend and one broker in one vm (refer to doris-in-one-docker.md)
• two frontends, three backends and one broker in three vms (refer to doris-multiple-docker.md)

• backup from 1 doris and restore to another (refer to doris-backup.md)