我正试图使用此命令docker build -t myimage .在django中运行docker现在docker文件试图运行RUN pip install -r /app/requirements.txt --no-cache-dir，但当ot到达Downloading psycopg2-2.9.3.tar.gz (380 kB)部分时，它抛出错误。
注意：我的requirements.txt文件中没有psycopg2，只有psycopg2-binary。
requirements.txt文件
...
dj-database-url==0.5.0
Django==3.2.7
django-filter==21.1
django-formset-js-improved==0.5.0.2
django-heroku==0.3.1
psycopg2-binary
python-decouple==3.5
...
Downloading pytz-2022.2.1-py2.py3-none-any.whl (500 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 500.6/500.6 kB 2.6 MB/s eta 0:00:00
Collecting psycopg2
Downloading psycopg2-2.9.3.tar.gz (380 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 380.6/380.6 kB 2.7 MB/s eta 0:00:00
Preparing metadata (setup.py): started
Preparing metadata (setup.py): finished with status 'error'
error: subprocess-exited-with-error
× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [23 lines of output]
running egg_info
creating /tmp/pip-pip-egg-info-383i9hb2/psycopg2.egg-info
writing /tmp/pip-pip-egg-info-383i9hb2/psycopg2.egg-info/PKG-INFO
writing dependency_links to /tmp/pip-pip-egg-info-383i9hb2/psycopg2.egg-info/dependency_links.txt
writing top-level names to /tmp/pip-pip-egg-info-383i9hb2/psycopg2.egg-info/top_level.txt
writing manifest file '/tmp/pip-pip-egg-info-383i9hb2/psycopg2.egg-info/SOURCES.txt'
Error: pg_config executable not found.
pg_config is required to build psycopg2 from source. Please add the directory
containing pg_config to the $PATH or specify the full executable path with the
option:
python setup.py build_ext --pg-config /path/to/pg_config build ...
or with the pg_config option in 'setup.cfg'.
If you prefer to avoid building psycopg2 from source, please install the PyPI
'psycopg2-binary' package instead.
For further information please check the 'doc/src/install.rst' file (also at
<https://www.psycopg.org/docs/install.html>).
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed
× Encountered error while generating package metadata.
╰─> See above for output.
note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
The command '/bin/sh -c pip install -r /app/requirements.txt --no-cache-dir' returned a non-zero code: 1
Dockerfile
FROM python:3.8.13-slim-buster
WORKDIR /app
COPY ./my_app ./
RUN pip install --upgrade pip --no-cache-dir
RUN pip install -r /app/requirements.txt --no-cache-dir
CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
# CMD ["gunicorn", "main_app.wsgi:application", "--bind"]
如果你想使用psycopg2，你需要安装系统依赖项(pg_*