testdriven.io django tdd - got Error: '$' is not a valid port number when running docker run

testdriven.io django tdd - got Error: '$' is not a valid port number when running docker run

每次我尝试运行命令

docker run --name django-tdd -e "PORT=8765" -p 8008:8765 registry.heroku.com/lit-sierra-68791/web:latest

我收到 错误:“$”不是有效的端口号

Dockerfile.prod

# pull official base image
FROM python:3.9.5-slim-buster

# set working directory
WORKDIR /usr/src/app

# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV DEBUG 0
ENV SECRET_KEY fgerg345y4y56u5u5757jk5k56kuykykyk
ENV DJANGO_ALLOWED_HOSTS localhost 127.0.0.1 [::1]
ENV PORT 8765

# install system dependencies
RUN apt-get update \
  && apt-get -y install gcc postgresql \
  && apt-get clean

# add and install requirements
RUN pip install --upgrade pip
COPY ./requirements.txt .
RUN pip install -r requirements.txt

# add app
COPY . .

# add and run as non-root user
RUN adduser --disabled-password myuser
USER myuser

# run gunicorn
CMD gunicorn drf_project.wsgi:application --bind 0.0.0.0:$PORT

我什至在上面的文件中添加了 ENV PORT 8765,但它也没有用。

不能在CMD中引用ENV变量。

您可以通过创建读取变量并将其传递给 CMD 的脚本来解决此问题。

创建文件bin/start.sh

#!/bin/sh
gunicorn drf_project.wsgi:application --bind 0.0.0.0:$PORT

更新Dockerfile

...
CMD ["bin/start.sh"]