React on Rails (Docker) で heroku にデプロイしたい(Releaseでエラー)

heroku.yml でデプロイしたいなにが理由でrelese logで止まっているか知りたい

release logで失敗してデプロイできない
buildはとりあえずはエラーはでていない

heroku.yml

build:
  docker:
    back: back/Dockerfile.back
    front: front/Dockerfile.front
  config:
    RAILS_ENV: production
release:
  image: back
  command:
    - bin/rails db:setup
run:
  back: bundle exec puma -C config/puma.rb

./back/Dockerfile.back

FROM ruby:2.6.5
# FROM heroku/heroku:18

RUN apt-get update -qq && \
    apt-get install -y build-essential \ 
                       libpq-dev \        
                       nodejs \
                       default-mysql-client \
                       vim

RUN mkdir /app_name 
ENV APP_ROOT /app_name 
ENV PORT ${PORT}
WORKDIR $APP_ROOT

ADD Gemfile $APP_ROOT/Gemfile
ADD Gemfile.lock $APP_ROOT/Gemfile.lock

RUN gem install bundler
RUN bundle install
ADD ./src/ $APP_ROOT

CMD ["bundle", "exec", "rails", "s", "-p", "3000", "-b", "0.0.0.0"]

docker-compose

version: '3'
services:
  db:
    image: mysql:5.7
    container_name: gurudb
    volumes:
      - ./db-data:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: password
      MYSQL_DATABASE: root
    ports:
      - "3306:3306"

  back:
    build: ./back
    container_name: guruback
    command: /bin/sh -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
    tty: true
    stdin_open: true
    volumes:
      - ./back/src:/app_name
      - bundle-data:/usr/local/bundle
    ports:
      - "3003:3000"
    links:
      - db

  front:
    build: ./front
    container_name: gurufront
    command: yarn start
    volumes:
      - ./front:/app_name
    ports:
      - 3000:3000
    tty: true

volumes:
  bundle-data:
  db-data:

error

heroku release log でこのように表示される

/usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:91:in `block in materialize': Could not find public_suffix-4.0.3 in any of the sources (Bundler::GemNotFound)
	from /usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:85:in `map!'
	from /usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:85:in `materialize'
	from /usr/local/lib/ruby/2.6.0/bundler/definition.rb:170:in `specs'
	from /usr/local/lib/ruby/2.6.0/bundler/definition.rb:237:in `specs_for'
	from /usr/local/lib/ruby/2.6.0/bundler/definition.rb:226:in `requested_specs'
	from /usr/local/lib/ruby/2.6.0/bundler/runtime.rb:108:in `block in definition_method'
	from /usr/local/lib/ruby/2.6.0/bundler/runtime.rb:20:in `setup'
	from /usr/local/lib/ruby/2.6.0/bundler.rb:107:in `setup'
	from /usr/local/lib/ruby/2.6.0/bundler/setup.rb:20:in `<top (required)>'
	from /usr/local/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from /usr/local/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from /app_name/config/boot.rb:3:in `<top (required)>'
	from bin/rails:3:in `require_relative'
	from bin/rails:3:in `<main>'

heroku logs --tailでエラーが取れた

bundle installできていない？

2020-01-23T07:42:31.910022+00:00 heroku[front.1]: State changed from crashed to starting
2020-01-23T07:42:34.409834+00:00 heroku[front.1]: Starting process with command `./node_modules/react-scripts/bin/react-scripts.js start`
2020-01-23T07:42:35.001847+00:00 heroku[front.1]: State changed from starting to up
2020-01-23T07:42:36.155238+00:00 heroku[front.1]: State changed from up to crashed
2020-01-23T07:42:36.137732+00:00 heroku[front.1]: Process exited with status 1
2020-01-23T07:42:36.094463+00:00 app[front.1]: internal/modules/cjs/loader.js:638
2020-01-23T07:42:36.094488+00:00 app[front.1]: throw err;
2020-01-23T07:42:36.094489+00:00 app[front.1]: ^
2020-01-23T07:42:36.094491+00:00 app[front.1]:
2020-01-23T07:42:36.094492+00:00 app[front.1]: Error: Cannot find module '/app_name/node_modules/react-scripts/bin/react-scripts.js'
2020-01-23T07:42:36.094494+00:00 app[front.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
2020-01-23T07:42:36.094495+00:00 app[front.1]: at Function.Module._load (internal/modules/cjs/loader.js:562:25)
2020-01-23T07:42:36.094497+00:00 app[front.1]: at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
2020-01-23T07:42:36.094498+00:00 app[front.1]: at startup (internal/bootstrap/node.js:283:19)
2020-01-23T07:42:36.094500+00:00 app[front.1]: at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
2020-01-23T07:42:47.914246+00:00 heroku[back.1]: Starting process with command `/bin/sh -c bundle\ exec\ puma\ -C\ config/puma.rb`
2020-01-23T07:42:48.569483+00:00 heroku[back.1]: State changed from starting to up
2020-01-23T07:42:49.892726+00:00 heroku[back.1]: State changed from up to crashed
2020-01-23T07:42:49.896958+00:00 heroku[back.1]: State changed from crashed to starting
2020-01-23T07:42:49.876900+00:00 heroku[back.1]: Process exited with status 127
2020-01-23T07:42:49.820044+00:00 app[back.1]: bundler: command not found: puma
2020-01-23T07:42:49.820113+00:00 app[back.1]: Install missing gem executables with `bundle install`