pipenv 的文件具有指定安装的模块 p4python，下面是运行 pipenv 模块安装的 docker 文件中的相关行。
RUN pipenv install --system --deploy --ignore-pipfile
但是，依赖项安装失败并显示以下消息。
Installing initially failed dependencies…
[pipenv.exceptions.InstallError]: File "/usr/lib/python3.6/site-
packages/pipenv/core.py", line 1874, in do_install
[pipenv.exceptions.InstallError]: keep_outdated=keep_outdated
[pipenv.exceptions.InstallError]: File "/usr/lib/python3.6/site-
packages/pipenv/core.py", line 1253, in do_init
[pipenv.exceptions.InstallError]: pypi_mirror=pypi_mirror,
[pipenv.exceptions.InstallError]: File "/usr/lib/python3.6/site-
packages/pipenv/core.py", line 859, in do_install_dependencies
[pipenv.exceptions.InstallError]: retry_list, procs,
failed_deps_queue, requirements_dir, **install_kwargs
[pipenv.exceptions.InstallError]: File "/usr/lib/python3.6/site-
packages/pipenv/core.py", line 763, in batch_install
[pipenv.exceptions.InstallError]: _cleanup_procs(procs, not
blocking, failed_deps_queue, retry=retry)
[pipenv.exceptions.InstallError]: File "/usr/lib/python3.6/site-
packages/pipenv/core.py", line 681, in _cleanup_procs
[pipenv.exceptions.InstallError]: raise
exceptions.InstallError(c.dep.name, extra=err_lines)
[pipenv.exceptions.InstallError]: ['Collecting p4python==2018.2.1743033
(from -r /tmp/pipenv-9u5gpy03-requirements/pipenv-6yab4iqw-
requirement.txt (line 1))', ' Using cached
https://files.pythonhosted.org/packages/36/5a
/0a1b192cdecd31cb8bc0d0ba39c73ffd84ce823053d0004823a1fdbe1440/p4python-
2018.2.1743033.tar.gz']
[pipenv.exceptions.InstallError]: ['ERROR: Complete output from command
python setup.py egg_info:', ' ERROR: Attempting to load API from
ftp.perforce.com', ' Traceback (most recent call last):', '
File "<string>", line 1, in <module>', ' File "/tmp/pip-install-
r77dk6yj/p4python/setup.py", line 269, in <module>', '
(p4_api_dir, loaded_from_ftp) = get_api_dir(version.getVersion())', '
File "/tmp/pip-install-r77dk6yj/p4python/setup.py", line 179, in
get_api_dir', ' p4ftp = P4APIFtp()', ' File "/tmp/pip-
install-r77dk6yj/p4python/tools/P4APIFtp.py", line 18, in __init__', '
self.ftp = FTP(PERFORCE_FTP)', ' File
"/usr/lib64/python3.6/ftplib.py", line 117, in __init__', '
self.connect(host)', ' File "/usr/lib64/python3.6/ftplib.py", line
152, in connect', ' source_address=self.source_address)', '
File "/usr/lib64/python3.6/socket.py", line 724, in create_connection',
' raise err', ' File "/usr/lib64/python3.6/socket.py", line
713, in create_connection', ' sock.connect(sa)', '
ConnectionRefusedError: [Errno 111] Connection refused', ' ---------
-------------------------------', 'ERROR: Command "python setup.py
egg_info" failed with error code 1 in /tmp/pip-install-
r77dk6yj/p4python/']
ERROR: ERROR: Package installation failed...
有谁知道为什么安装失败？