Librosa 在 Docker 中引发 OSError('sndfile library not found')答案

【问题标题】：Librosa raised OSError('sndfile library not found') in DockerLibrosa 在 Docker 中引发 OSError('sndfile library not found')
【发布时间】：2020-04-15 17:52:55
【问题描述】：

我正在尝试为一个小型 python web 项目编写 Dockerfile，但依赖项有问题。我一直在互联网上进行一些搜索，它说 Librosa 库需要 libsndfile 才能正常工作，所以我尝试使用 apt-get install libsndfile1 安装它（我也尝试过 libsndfile-dev，...）。但是，它似乎并没有解决我的问题。

这就是我的 Dockerfile 的样子：

FROM python:3.6-buster as build

ENV STATIC_URL /static
ENV STATIC_PATH /var/www/app/static

WORKDIR /var/www/

RUN python -m venv /opt/venv

ENV PATH="/opt/venv/bin:$PATH"

COPY requirements.txt .

RUN pip install -r requirements.txt

RUN pip install gunicorn

RUN apt-get update -y && apt-get install -y --no-install-recommends build-essential gcc \
                                        libsndfile1 

FROM python:3.6-buster AS run

COPY --from=build /opt/venv /opt/venv

COPY . .

ENV PATH="/opt/venv/bin:$PATH"

RUN gunicorn -b :5000 --access-logfile - --error-logfile - app:app

但是，当我尝试构建并运行它时，发生了这个错误：

[2020-04-15 17:30:02 +0000] [7] [INFO] Starting gunicorn 20.0.4
[2020-04-15 17:30:02 +0000] [7] [INFO] Listening at: http://0.0.0.0:5000 (7)
[2020-04-15 17:30:02 +0000] [7] [INFO] Using worker: sync
[2020-04-15 17:30:02 +0000] [10] [INFO] Booting worker with pid: 10
[2020-04-15 17:30:03 +0000] [10] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
    worker.init_process()
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/workers/base.py", line 119, in init_process
    self.load_wsgi()
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
    return self.load_wsgiapp()
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/opt/venv/lib/python3.6/site-packages/gunicorn/util.py", line 358, in import_app
    mod = importlib.import_module(module)
  File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/app.py", line 12, in <module>
    from emotion_model.test import load_model, inference_segment
  File "/emotion_model/test.py", line 9, in <module>
    import librosa
  File "/opt/venv/lib/python3.6/site-packages/librosa/__init__.py", line 12, in <module>
    from . import core
  File "/opt/venv/lib/python3.6/site-packages/librosa/core/__init__.py", line 126, in <module>
    from .audio import *  # pylint: disable=wildcard-import
  File "/opt/venv/lib/python3.6/site-packages/librosa/core/audio.py", line 10, in <module>
    import soundfile as sf
  File "/opt/venv/lib/python3.6/site-packages/soundfile.py", line 142, in <module>
    raise OSError('sndfile library not found')
OSError: sndfile library not found
[2020-04-15 17:30:03 +0000] [10] [INFO] Worker exiting (pid: 10)
[2020-04-15 17:30:03 +0000] [7] [INFO] Shutting down: Master
[2020-04-15 17:30:03 +0000] [7] [INFO] Reason: Worker failed to boot.

【问题讨论】：

尝试将 libsndfile1 的安装移到 pip install 之前
这就是我在这个版本之前所做的，但由于我通常修改 apt install 部分，我在 pip install 之后移动了它以进行缓存。
放在前面有用吗？
不，同样的错误发生了。

标签： python python-3.x docker librosa

【解决方案1】：

对于那些来到这篇文章寻找解决方案的人。我的解决方法是将 libsndfile 的安装放在这部分之后：

FROM python:3.6-buster AS run

COPY --from=build /opt/venv /opt/venv

COPY . .

ENV PATH="/opt/venv/bin:$PATH"

应该是：

FROM python:3.6-buster AS run

COPY --from=build /opt/venv /opt/venv

COPY . .

ENV PATH="/opt/venv/bin:$PATH"

RUN apt-get update -y && apt-get install -y --no-install-recommends build-essential gcc \
                                        libsndfile1 

RUN gunicorn -b :5000 --access-logfile - --error-logfile - app:app

【讨论】：

【解决方案2】：

我遇到了类似的问题：

RUN apt-get update \
&& apt-get upgrade -y \
&& apt-get install -y \
&& apt-get -y install apt-utils gcc libpq-dev libsndfile-dev \
...

【讨论】：