* Project Orbit: Fix Dockerfile
This change is necessary to reflect the recent branch renaming on
github.com/google/orbit from master to main.
* Project Orbit: Fix build.sh
The build is fixed by manually setting flags for building llvm.
* Addressed review comments
I added the wrong header in the last commit. This will be fixed by this
commit.
Furthermore it seems to run as a different user in ClusterFuzz. So this
is fixed as well.