Docker build failed

hellow~，I tried to use the code of the master branch to build the docker image, but it failed. I tried the code of 1.0.0 again and got the same error. Can anyone help me?
OS: Ubuntu 20.04
docker: 24.0.7

terminal logs:
```
45.92 Traceback (most recent call last):
45.92 File "utilities/install.py", line 242, in
45.92 geppetto_branch=args.geppetto_version,
45.92 File "utilities/install.py", line 206, in main
45.92 execute(cmd=['yarn', 'install', '--immutable'], cwd=WEBAPP_DIR)
45.92 File "utilities/install.py", line 38, in execute
45.92 exit_code = subprocess.call(cmd, cwd=cwd, *args, **kwargs)
45.92 File "/opt/conda/lib/python3.7/subprocess.py", line 339, in call
45.92 with Popen(*popenargs, **kwargs) as p:
45.92 File "/opt/conda/lib/python3.7/subprocess.py", line 800, in __init__
45.92 restore_signals, start_new_session)
45.92 File "/opt/conda/lib/python3.7/subprocess.py", line 1551, in _execute_child
45.92 raise child_exception_type(errno_num, err_msg, err_filename)
45.92 FileNotFoundError: [Errno 2] No such file or directory: 'yarn': 'yarn'
------
Dockerfile:50
--------------------
48 | RUN jupyter serverextension enable --py --sys-prefix jupyter_geppetto
49 |
50 | >>> RUN python utilities/install.py ${BUILD_ARGS} --workspace $WORKSPACE_VERSION --no-test
51 |
52 | RUN jupyter labextension disable @jupyterlab/hub-extension
--------------------
ERROR: failed to solve: process "/bin/bash -o pipefail -c python utilities/install.py ${BUILD_ARGS} --workspace $WORKSPACE_VERSION --no-test" did not complete successfully: exit code: 1
```

Start with Dockerfile line 50 and utilities/install.py, especially the execute call at line 38 and the yarn install invocation at line 206. Reproduce the build with the reported Ubuntu and Docker versions, then determine why yarn is unavailable and verify that the Docker image builds successfully.

Written by the indexing model from the issue text.