当我想构建 Alpine Docker 时，在定义特定的 python 版本时出现错误。
我的 Dockerfile：
FROM python:3-alpine
RUN apk --no-cache add build-base openldap-dev python2-dev 'python3=3.6.9-r3' 'python3-dev=3.6.9-r3'
RUN pip3 install python-ldap sqlalchemy requests
ADD ucs-root-ca.crt /usr/local/share/ca-certificates/foo.crt
RUN chmod 644 /usr/local/share/ca-certificates/foo.crt && update-ca-certificates
COPY templates ./templates
COPY api.py filedb.py syncer.py ./
VOLUME [ "/db" ]
VOLUME [ "/conf/dovecot" ]
VOLUME [ "/conf/sogo" ]
ENTRYPOINT [ "python3", "syncer.py" ]
当我想构建我的 dockerfile 时出现以下错误：
ERROR: unable to select packages:
python3-3.8.7-r0:
breaks: world[python3=3.6.9-r3]
satisfies: python3-dev-3.8.7-r0[python3=3.8.7-r0]
python3-dev-3.8.7-r0:
breaks: world[python3-dev=3.6.9-r3]
The command '/bin/sh -c apk …