Docker build 给我这个错误“/bin/sh: -c requires an argument, The command '/bin/sh -c' returned a non-zero code: 2”

Question

我正在为我的消息应用程序创建一个 docker 文件，这是我的 dockerfile。

FROM python:3.9-alpine3.15
LABEL maintainer="Noor Ibrahim"
ENV PYTHONUNBUFFERED 1
COPY ./message /message
COPY ./requirements.txt /requirements.txt
WORKDIR /message
EXPOSE 8000
RUN
RUN python -m venv /py && \
    /py/bin/pip install --upgrade pip && \
    /py/bin/pip install -r /requirements.txt && \
    adduser --disabled-password --no-create-home user

ENV PATH="/py/bin:$PATH"
USER user

我正在运行这个命令

docker build .

我在创建构建时收到此错误。我尝试了不同的方法，但这个错误并没有消失。

Sending build context to Docker daemon  67.07kB
Step 1/11 : FROM python:3.9-alpine3.15
 ---> e49e2f1d4108
Step 2/11 : LABEL maintainer="Noor Ibrahim"
 ---> Using cache
 ---> 517b54d522ef
Step 3/11 : ENV PYTHONUNBUFFERED 1
 ---> Running in d8eb9d900584
 ---> 29e281514398
Step 4/11 : COPY ./message /message
 ---> f84edc508eec
Step 5/11 : COPY ./requirements.txt /requirements.txt
 ---> 608149cc5c42
Step 6/11 : WORKDIR /message
 ---> Running in b26ec4b33053
Removing intermediate container b26ec4b33053
 ---> c608a04f1993
Step 7/11 : EXPOSE 8000
 ---> Running in 8b4f7f49a3b8
Removing intermediate container 8b4f7f49a3b8
 ---> a18f155d9320
Step 8/11 : RUN
 ---> Running in 6fa80a39c7d0
/bin/sh: -c requires an argument
The command '/bin/sh -c' returned a non-zero code: 2

Answer 1

几乎可以肯定，额外的RUN 行后面没有命令

EXPOSE 8000
RUN     <==== This one!! 
RUN python -m venv /py && \
    /py/bin/pip install --upgrade pip && \
    /py/bin/pip install -r /requirements.txt && \
    adduser --disabled-password --no-create-home user

摆脱它，它应该没问题。