Docker容器构建失败:"exec:\" flask \":在$ PATH中找不到可执行文件":未知 [英] Docker container build faild: "exec: \"flask\": executable file not found in $PATH": unknown

问题描述

我正在学习docker.我尝试在docker，com上运行一个示例dockerfile.但是我有一个问题是来自守护程序的错误响应:OCI运行时创建失败:container_linux.go:345:启动容器进程导致"exec:\" flask \":在$ PATH中找不到可执行文件":未知.

I'm learning docker. I try run a sample dockerfile on docker,com. But I have a problem is "Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused "exec: \"flask\": executable file not found in $PATH": unknown ".

FROM python:3.7-alpine

WORKDIR /code
ENV FLASK_APP app.py
ENV FLASK_RUN_HOST 0.0.0.0
RUN apk add --no-cache gcc musl-dev linux-headers
COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt
COPY . .
CMD ["flask","run"]

非常感谢.

推荐答案

在PATH中找不到类似 flask 的东西.它未安装(是否在requirements.txt中?)，或者只是未添加到路径中.

Seems like flask is not found from the PATH. It is either not installed (is it in requirements.txt?), or just not added into path.

您可以尝试设置 CMD ["python"，-m"，"flask"，"run"] .

这里的示例对我来说很好. https://docs.docker.com/compose/gettingstarted/

Example here works for me well. https://docs.docker.com/compose/gettingstarted/

您可以尝试将-no-cache 选项传递给以防万一，制作出清晰的图像: docker build --no-cache -t test.然后运行 docker run test

You could try to pass --no-cache option to just in case make clean image: docker build --no-cache -t test . and then run docker run test

尝试测试映像时，先进入docker-compose 状态.

When attempting to test image, before going into docker-compose state.

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