我真的需要docker帮助。

我的docker文件如下：

FROM python:3-alpine

LABEL author="alaa"
LABEL description="Dockerfile for Python script which generates emails"
RUN pip install tqdm
COPY email_generator.py /app/
CMD python3 /app/email_generator.py

我的pthon代码如下：

import json  # to read json files
import os  # to access operation for get and changing directory


def writeTextFile(text,index):
    f = open(ziel + '/email_%s.txt' % index,'w+')
    f.write(text)
    f.close()


def writeHashFile(text):
    f = open(ziel + '/00_Hash.json','w+')
    f.write(str(text))
    f.close()


def readJsonCordinate(fileName):
    """Read the json data."""
    with open(fileName,'r',encoding='utf-8') as f:  # Opening the file
        data = json.load(f)  # Read the json file
    return data

以此类推...

我的问题是，如果要在构建映像后从主机系统获取文件，则会出现此错误。但是，如果我在macOS的pycharm上天真地运行代码，它将运行完美

Traceback (most recent call last):
  File "/app/email_generator.py",line 112,in <module>
    betreff = readJsonCordinate(quelle + '/Betreff.json')
  File "/app/email_generator.py",line 22,in readJsonCordinate
    with open(fileName,encoding='utf-8') as f:  # Opening the file
FileNotFoundError: [Errno 2] No such file or directory: '/Users/soso/desktop/email_generator/Worterbuecher/Betreff.json'