该命令返回了一个非零代码：2 docker

Question

以下是Dockerfile，

FROM alpine:3.10

# Add the testing repo in case it's needed for additional dependencies
# For example, gdal can be installed by using gdal@community
RUN echo "@community http://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories

# Install system dependencies
RUN apk add --no-cache --update \
  bash \
  gcc \
  build-base \
  musl-dev \
  postgresql-dev \
  'python3~=3.7.5' \
  'python3-dev~=3.7.5' \
  curl \
# zlib, zlib-dev, and libjpeg-turbo are required by pillow
  zlib \
  zlib-dev \
  libjpeg-turbo \
  libjpeg-turbo-dev \
  libffi-dev
RUN pip3 install --no-cache-dir -q pipenv

# Add our code
ADD ./ /opt/webapp/
WORKDIR /opt/webapp

# Install dependencies
RUN pipenv install --deploy --system

# Allow SECRET_KEY to be passed via arg so collectstatic can run during build time
ARG SECRET_KEY
RUN python3 manage.py collectstatic --no-input

# Run the image as a non-root user
RUN adduser -D myuser
USER myuser

# Run the web server on port $PORT
CMD waitress-serve --port=$PORT performit_15391.wsgi:application

以下是记录的来自服务器的日志，我不知道为什么构建失败，有人可以指导吗？

=== Fetching app code.

=== Building release (./backend/Dockerfile)
Sending build context to Docker daemon    895kB

Step 1/12 : FROM alpine:3.10
3.10: Pulling from library/alpine
21c83c524219: Pulling fs layer
21c83c524219: Verifying Checksum
21c83c524219: Download complete
21c83c524219: Pull complete
Digest: sha256:f0e9534a598e501320957059cb2a23774b4d4072e37c7b2cf7e95b241f019e35
Status: Downloaded newer image for alpine:3.10
 ---> be4e4bea2c2e
Step 2/12 : RUN echo "@community http://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories
 ---> Running in 42057b30f8bf
Removing intermediate container 42057b30f8bf
 ---> 015ada914599
Step 3/12 : RUN apk add --no-cache --update   bash   gcc   build-base   musl-dev   postgresql-dev   'python3~=3.7.5'   'python3-dev~=3.7.5'   curl   zlib   zlib-dev   libjpeg-turbo   libjpeg-turbo-dev   libffi-dev
 ---> Running in acf5e541c616
fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/community/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
[91mERROR: unsatisfiable constraints:
[0m  python3-3.7.7-r0:
    breaks: world[python3~3.7.5]
    satisfies: python3-dev-3.7.7-r0[python3=3.7.7-r0]
  python3-dev-3.7.7-r0:
    breaks: world[python3-dev~3.7.5]
The command '/bin/sh -c apk add --no-cache --update   bash   gcc   build-base   musl-dev   postgresql-dev   'python3~=3.7.5'   'python3-dev~=3.7.5'   curl   zlib   zlib-dev   libjpeg-turbo   libjpeg-turbo-dev   libffi-dev' returned a non-zero code: 2

以上是日志，apk命令失败。有依赖性问题吗？对我来说，日志消息不是很有用。预先感谢。

Answer 1

安装Python时发生版本冲突。 APK软件包管理器支持python-3.7.7-r0的alpine:3.10。但是您已经明确提到了3.7.5版本，该版本不可用。在这里，您可以使用python 3.7.7或使用具有python 3.7.5的基本映像来构建您的应用。