我试图为PythonFlask应用程序构建一个Docker映像，但是有构建问题-所有文件都位于一个名为web-这是项目结构：

web/    __init__.py    app.py    Dockerfile    models.py    requirements.txt

和app.py目前的情况如下：

from flask import Flaskapp = Flask(__name__)@app.route("/")def hello_world():    return "Hello World!"if __name__ == "__main__":    app.run(debug=True,host='0.0.0.0')

我已经把Dockerfile从… :

FROM ubuntu:14.04# Update OSRUN sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.listRUN apt-get updateRUN apt-get -y upgrade# Install PythonRUN apt-get install -y python-dev python-pip# Add requirements.txtADD requirements.txt /webapp# Install wsgi Python web serverRUN pip install uwsgi# Install app requirementsRUN pip install -r requirements.txt# Create app directoryADD . /webapp# Set the default directory for our environmentENV HOME /webappWORKDIR /webapp# Expose port 8000 for uwsgiEXPOSE 8000ENTRYPOINT ["uwsgi", "--http", "0.0.0.0:8000", "--module", "app:app", "--processes", "1", "--threads", "8"]

我试着用docker build --no-cache --rm -t flask-app，但它以错误消息结尾：

Successfully installed uwsgiCleaning up... ---> 9bbc004212a3Removing intermediate container 70ed8f07c408Step 8/13 : RUN pip install -r requirements.txt ---> Running in f5e2eb59ffd1Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'Storing debug log for failure in /root/.pip/pip.logThe command '/bin/sh -c pip install -r requirements.txt' returned a non-zero code: 1

我认为对您的Dockerfile进行非常小的更改可以解决以下问题：

FROM ubuntu:14.04# Update OSRUN sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.listRUN apt-get updateRUN apt-get -y upgrade# Install PythonRUN apt-get install -y python-dev python-pip# Add requirements.txt# Create app directoryADD . /webapp# Install wsgi Python web serverRUN pip install uwsgi# Install app requirements# Full path to requirementsRUN pip install -r /webapp/requirements.txt# Set the default directory for our environmentENV HOME /webappWORKDIR /webapp# Expose port 8000 for uwsgiEXPOSE 8000ENTRYPOINT ["uwsgi", "--http", "0.0.0.0:8000", "--module", "app:app", "--processes", "1", "--threads", "8"]

我刚把完整的路径添加到requirements.txt，这可以通过几种不同的方式来完成，比如复制整个目录文件夹，然后构建它。

原文