Rails run with puma in dockerfile and enable https - ruby-on-rails

Question

This is an example of a Dockerfile for ruby on rails project.
I want to run it with ssl key and cert
RUN apt-get update -yqq && apt-get install -y npm && npm install -g yarn
RUN apt-get install -y ruby-full
RUN apt install libsqlite3-dev
RUN gem install rails --version=6.1
RUN mkdir /var/app
WORKDIR /var/app
COPY . .
RUN bundle install --without development test
RUN npm install --force
RUN export SECRET_KEY_BASE=...............................
EXPOSE 3000
EXPOSE 80
EXPOSE 443
EXPOSE 8443
RUN rails webpacker:install
#RUN rake assets:clean
RUN rake assets:precompile
CMD rails s -b 0.0.0.0 -e production

Answer 1

FROM ruby:3.0.2
RUN apt-get update -yqq && apt-get install -y npm && npm install -g yarn
RUN apt-get install -y ruby-full
RUN apt install libsqlite3-dev
RUN gem install rails --version=6.1
RUN mkdir /var/app
WORKDIR /var/app
COPY . .
RUN bundle install --without development test
RUN npm install --force
RUN export SECRET_KEY_BASE=...............................
EXPOSE 3000
EXPOSE 80
EXPOSE 443
EXPOSE 8443
RUN rails webpacker:install
#RUN rake assets:clean
RUN rake assets:precompile
CMD puma -b 'ssl://0.0.0.0:8443?key=yourkey.key&cert=yourcertificat.pem&verify_mode=none' -b 'tcp://0.0.0.0:80' -e production
In config/environment/production.rb add: config.force_ssl=true
You can you freessl to get ssl key and certificat for your domain;
https://freessl.org/
To run it on you virtual machine or instance: docker run -d -p 443:443 -p 80:80 yourimage:tag