我正在尝试用docker设置ruby on rails一切都很好，但我希望动态域作为环境变量传递到nginx.conf文件，在构建图像期间通过docker-compose命令，但我不知道如何做。我正在尝试使用此命令Docker-compose构建dcoker-compose

Docker文件

FROM ruby:2.7.2
ENV RAILS_ROOT /var/www/quickcard
ENV BUNDLE_VERSION 2.1.4
ENV BUNDLE_PATH usr/local/bundle/gems
ENV RAILS_LOG_TO_STDOUT true
ENV RAILS_PORT 5000
COPY ./entrypoint.sh /usr/local/bin/entrypoint.sh
RUN chmod +x /usr/local/bin/entrypoint.sh
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
RUN apt-get update -qq && apt-get install -y build-essential \
git \
libxml2-dev \
libpq-dev \
libxslt-dev \
nodejs \
yarn \
imagemagick \
tzdata \
less \
cron \
&& rm -rf /var/cache/apk/*
RUN gem install bundler --version "$BUNDLE_VERSION"
RUN mkdir -p $RAILS_ROOT
WORKDIR $RAILS_ROOT
ADD Gemfile Gemfile
ADD Gemfile.lock Gemfile.lock
COPY yarn.lock yarn.lock
RUN bundle install
EXPOSE $RAILS_PORT
RUN ln -s $RAILS_ROOT/config/systemd/puma.service /etc/systemd/system/quickcard
COPY . .
RUN crontab -l | { cat; echo ""; } | crontab -
RUN yarn install
RUN yarn install --check-files
RUN ls /var/www/quickcard/public
ENTRYPOINT ["entrypoint.sh"]
CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]

Nginx Docker文件

FROM nginx
RUN apt-get update -qq && apt-get -y install apache2-utils
ENV RAILS_ROOT /var/www/quickcard
WORKDIR $RAILS_ROOT
RUN mkdir log
COPY public public/

COPY ./nginx.conf /etc/nginx/conf.d/default.conf
COPY ./multi_quickcard.key /etc/nginx/multi_quickcard.key
COPY ./quickcard-ssl-test.pem /etc/nginx/quickcard-ssl-test.pem

EXPOSE 80 443
CMD [ "nginx", "-g", "daemon off;" ]

Nginx.配置文件，例如

upstream puma {
    # Path to Puma SOCK file, as defined previously
    server app:5000 fail_timeout=0;
}

server {
    listen 80;
    server_name default_server;

    index index.html index.htm;
    try_files $uri $uri/ /index.html =404;

    location / {
        root /var/www/quickcard/public/;
        proxy_pass http://puma;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
    }

    location /api {
        root /var/www/quickcard/public/;
        proxy_pass http://puma;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
    }

    location ^~ /assets/ {
        root /var/www/quickcard/public/;
        gzip_static on;
        expires max;
        add_header Cache-Control public;
    }

    error_page 500 502 503 504 /500.html;
    client_max_body_size 4G;
    keepalive_timeout 10;
}

Docker合成文件

version: '2.2'
services:
  app:
    build: 
      context: .
      dockerfile: ./Dockerfile
    command: bash -c "bundle exec rails s -p 5000 -e production -b 0.0.0.0 &&  RAILS_ENV=production bundle exec rake assets:precompile"
    environment:
      RAILS_ENV: production
    volumes:
      - /var/wwww/quickcard
      - /var/wwww/quickcard/public
    ports:
      - 5000:5000
  sidekiq:
    build: .
    command: bundle exec sidekiq -C config/sidekiq.yml
    environment:
      RAILS_ENV: production
    volumes:
      - /var/wwww/quickcard/tmp
  cron_job:
    build: .
    command: cron -f
  nginx:
    build:
      context: .
      dockerfile: ./nginx.Dockerfile
    volumes:
      - ./log-nginx:/var/log/nginx/
    restart: always
    ports:
      - 80:80
      - 443:443