added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/backend/Dockerfile

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+FROM ruby:3.2.3
+
+# set working directory
+WORKDIR /app
+
+# install dependencies
+RUN apt-get update -qq && \
+      apt-get install -y nodejs postgresql-client
+
+# install bundler
+RUN gem install bundler:2.5.6
+
+# copy the Gemfile and Gemfile.lock to the container
+COPY Gemfile Gemfile.lock ./
+
+# install the gems
+RUN bundle install --full-index
+
+# copy the rest of the application files to the container
+COPY . .
+
+# start the server
+CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]