gravity.tar.gz issue

[rocky2015aaa]

I am following
https://github.com/cosmos/gravity-bridge#run-gravity-bridge-right-now-using-docker
And I have a problem.

 > [11/13] RUN pushd /gravity/orchestrator/ && PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/go/bin:$HOME/.cargo/bin cargo build --all --release:
#18 0.313 /gravity/orchestrator /
#18 0.439 error: failed to load manifest for workspace member `/gravity/orchestrator/orchestrator`
#18 0.439 
#18 0.439 Caused by:
#18 0.439   failed to load manifest for dependency `cosmos_gravity`
#18 0.439 
#18 0.439 Caused by:
#18 0.439   failed to read `/gravity/orchestrator/cosmos_gravity/Cargo.toml`
#18 0.439 
#18 0.439 Caused by:
#18 0.439   No such file or directory (os error 2)

I am using release v0.1.2
in gravity-bridge/tests/dockerfile/gravity.tar.gz, Actually, no /gravity/orchestrator/cosmos_gravity/Cargo.toml file.
How do I fix this?