来自守护程序的错误响应：Dockerfile解析错误行1：未知指令：＃

问题描述

我是docker的新手，正在尝试学习它。
我正在按照本教程进行操作：

Im new to docker and trying to learn it.Im following this tutorial: https://docs.docker.com/get-started/part2/#apppy

所以我在Windows上安装了Docker。
创建了3个文件，app.py，Dockefile和Requirements.txt

So I installed Docker on Windows.Created 3 files, app.py, Dockefile and requirements.txt

我的docker文件如下

My docker file looks like this

# Use an official Python runtime as a parent image
FROM python:2.7-slim

# Set the working directory to /app
WORKDIR /app

# Copy the current directory contents into the container at /app
ADD . /app

# Install any needed packages specified in requirements.txt
RUN pip install --trusted-host pypi.python.org -r requirements.txt

# Make port 80 available to the world outside this container
EXPOSE 80

# Define environment variable
ENV NAME World
CMD ["python", "app.py"]

当我在powershell中运行

When I run it in powershell

docker build -t friendlybuild .

但是结果是：

Error response from daemon: Dockerfile parse error line 1: unknown instruction: #

就像它不起作用

我不知道为什么它不起作用

I have no idea why it doesnt work

推荐答案

通过删除dockerfile并使用记事本（而不是可视代码）创建它来解决

Solved by removing the dockerfile and creating it with Notepad instead of Visual Code

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