同一Dockerfile上的不同条件

我有一个Dockerfile,其中包含一些我想有条件使用的命令:

1. FROM + image_name (我有一个M1芯片MacOS,所以我需要添加 --platform=linux/amd64 但我想部署在不需要它的AWS EC2 linux实例中)
2. 在生产中,我希望使用nginx运行我的项目,因此我希望Dockerfile以此结束 RUN mkdir -p tmp/sockets . 但对于测试,我不需要nginx,所以我希望我的Dockerfile以这个结尾

# Expose port 
EXPOSE 3000

# Start rails
CMD ["rails", "server", "-b", "0.0.0.0"]

我想用 multi stage dockerfile 解决 FROM image 问题,但由此产生的Dockerfile相当长,因为除了 来自图像 部分 对于 nginx 我想使用shell脚本,但我不知道如何编写公开端口和启动rails的最终命令。 以下是文件:

run_dockerfile.sh

#!/bin/bash

if [ ${RUN_DOCKERFILE} = "PROD" ]; then 
    mkdir -p tmp/sockets
else
    ????
fi

我的 Dockerfile 如下所示:

# Start from the official ruby image
# To run Dockerfile with arm64 architecture (M1 chip MacOS for example)
FROM --platform=linux/amd64 ruby:2.6.6 AS ARM64

# Set environment
ARG BUILD_DEVELOPMENT
# if --build-arg BUILD_DEVELOPMENT=1, set RAILS_ENV to 'development' or set to null otherwise.
ENV RAILS_ENV=${BUILD_DEVELOPMENT:+development}
# if RAILS_ENV is null, set it to 'production' (or leave as is otherwise).
ENV RAILS_ENV=${RAILS_ENV:-production}

# Update and install JS & DB
RUN apt-get update -qq && apt-get install -y nodejs postgresql-client

# Create a directory for the application and use it
RUN mkdir /myapp
WORKDIR /myapp

# Gemfile and lock file need to be present, they'll be overwritten immediately
COPY Gemfile /myapp/Gemfile
COPY Gemfile.lock /myapp/Gemfile.lock

# Install gem dependencies
RUN gem install bundler:2.2.32
RUN bundle install
RUN curl https://deb.nodesource.com/setup_12.x | bash
ADD https://dl.yarnpkg.com/debian/pubkey.gpg /tmp/yarn-pubkey.gpg
RUN apt-key add /tmp/yarn-pubkey.gpg && rm /tmp/yarn-pubkey.gpg
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 yarn  && apt-get install -y npm
RUN yarn add bootstrap

COPY . /myapp

# So that webpacker compiles
RUN yarn config set ignore-engines true
RUN rm -rf bin/webpack*
RUN rails webpacker:install
RUN bundle exec rails webpacker:compile
RUN bundle exec rake assets:precompile

# This script runs every time the container is created, necessary for rails
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]


# Run run_dockerfile.sh
COPY run_dockerfile.sh run_dockerfile.sh
RUN chmod u+x run_dockerfile.sh && ./run_dockerfile.sh


##################################################

# Start from the official ruby image
# To run Dockerfile without arm64 architecture
FROM ruby:2.6.6 AS AMD64

# Set environment
ARG BUILD_DEVELOPMENT
# if --build-arg BUILD_DEVELOPMENT=1, set RAILS_ENV to 'development' or set to null otherwise.
ENV RAILS_ENV=${BUILD_DEVELOPMENT:+development}
# if RAILS_ENV is null, set it to 'production' (or leave as is otherwise).
ENV RAILS_ENV=${RAILS_ENV:-production}

# Update and install JS & DB
RUN apt-get update -qq && apt-get install -y nodejs postgresql-client

# Create a directory for the application and use it
RUN mkdir /myapp
WORKDIR /myapp

# Gemfile and lock file need to be present, they'll be overwritten immediately
COPY Gemfile /myapp/Gemfile
COPY Gemfile.lock /myapp/Gemfile.lock

# Install gem dependencies
RUN gem install bundler:2.2.32
RUN bundle install
RUN curl https://deb.nodesource.com/setup_12.x | bash
ADD https://dl.yarnpkg.com/debian/pubkey.gpg /tmp/yarn-pubkey.gpg
RUN apt-key add /tmp/yarn-pubkey.gpg && rm /tmp/yarn-pubkey.gpg
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 yarn  && apt-get install -y npm
RUN yarn add bootstrap

COPY . /myapp

# So that webpacker compiles
RUN yarn config set ignore-engines true
RUN rm -rf bin/webpack*
RUN rails webpacker:install
RUN bundle exec rails webpacker:compile
RUN bundle exec rake assets:precompile

# This script runs every time the container is created, necessary for rails
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]

# Run run_dockerfile.sh
COPY run_dockerfile.sh run_dockerfile.sh
RUN chmod u+x run_dockerfile.sh && ./run_dockerfile.sh

我有没有办法 .sh 或者,对于正确的方法有什么建议吗?非常感谢。