Docker issue: /bin/sh: pip: not found

问题

So my dockerfile is :

FROM iron/python:2.7

WORKDIR /app
ADD . /app

RUN pip install --upgrade pip
RUN pip install -r ./requirements.txt

Recently though when I build my image with: docker build --no-cache -t <image name>:<tag>

I run into the issue of:

Step 4/6 : RUN pip install --upgrade pip
---> Running in 00c781a53487
/bin/sh: pip: not found
The command '/bin/sh -c pip install --upgrade pip' returned a non-zero code: 127

was there any changes to docker that might have caused this? Because last week this was all fine and there were no issues building the image with the same exact code.

回答1:

You have to install pip first.

FROM iron/python:2.7
WORKDIR /app
ADD . /app
RUN set -xe \
    && apt-get update \
    && apt-get install python-pip
RUN pip install --upgrade pip
RUN pip install -r ./requirements.txt

来源：https://stackoverflow.com/questions/48588449/docker-issue-bin-sh-pip-not-found