regexp_parserのgemがinstallされた状態にならない

実現したいこと

こちらの記事を参考にしてrailsアプリにて無限スクロールを実装したいです

gem 'kaminari', '~> 1.1.1' をinstallした後、dockerコンテナを起動したのですが、railsサーバーにアクセスできなくなってしまいました。
ログを確認したところ,

Could not find regexp_parser-1.5.1 in any of the sources
Run `bundle install` to install missing gems.
Could not find regexp_parser-1.5.1 in any of the sources
Run `bundle install` to install missing gems.

のエラーが出たため、gem 'regexp_parser', '~> 1.5.1'をinstallしようとした次第です。
しかしながら、bundle updateやgemfile.lockを削除してやり直したりして見たのですが、ログを確認するとまだこのエラーが出てきます。
何卒解決策のほどご教授お願いいたします。

gemfile
1source 'https://rubygems.org'
2git_source(:github) { |repo| "https://github.com/#{repo}.git" }
3
4ruby '2.6.3'
5
6# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
7gem 'rails', '~> 5.2.3'
8# Use mysql as the database for Active Record
9gem 'mysql2', '>= 0.4.4', '< 0.6.0', group: :development
10# Use Puma as the app server
11gem 'puma', '~> 3.11'
12# Use SCSS for stylesheets
13gem 'sass-rails', '~> 5.0'
14# Use Uglifier as compressor for JavaScript assets
15gem 'uglifier', '>= 1.3.0'
16# See https://github.com/rails/execjs#readme for more supported runtimes
17# gem 'mini_racer', platforms: :ruby
18
19# Use CoffeeScript for .coffee assets and views
20gem 'coffee-rails', '~> 4.2'
21# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
22gem 'turbolinks', '~> 5'
23# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
24gem 'jbuilder', '~> 2.5'
25# Use Redis adapter to run Action Cable in production
26# gem 'redis', '~> 4.0'
27# Use ActiveModel has_secure_password
28# gem 'bcrypt', '~> 3.1.7'
29
30# Use ActiveStorage variant
31# gem 'mini_magick', '~> 4.8'
32
33# Use Capistrano for deployment
34# gem 'capistrano-rails', group: :development
35
36# Reduces boot times through caching; required in config/boot.rb
37gem 'bootsnap', '>= 1.1.0', require: false
38
39gem 'bootstrap', '~> 4.3.1'
40gem 'mini_racer'
41gem 'jquery-rails'
42
43group :development, :test do
44  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
45  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
46end
47
48group :development do
49  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
50  gem 'web-console', '>= 3.3.0'
51  gem 'listen', '>= 3.0.5', '< 3.2'
52  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
53  gem 'spring'
54  gem 'spring-watcher-listen', '~> 2.0.0'
55end
56
57group :test do
58  # Adds support for Capybara system testing and selenium driver
59  gem 'capybara', '>= 2.15'
60  gem 'selenium-webdriver'
61  # Easy installation and use of chromedriver to run system tests with Chrome
62  gem 'chromedriver-helper'
63end
64
65# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
66gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
67gem 'pg', group: :production  # この1行を追加
68gem 'kaminari', '~> 1.1.1'
69gem 'regexp_parser', '~> 1.5.1'

Gemfilelock
1GEM
2  remote: https://rubygems.org/
3  specs:
4    actioncable (5.2.3)
5      actionpack (= 5.2.3)
6      nio4r (~> 2.0)
7      websocket-driver (>= 0.6.1)
8    actionmailer (5.2.3)
9      actionpack (= 5.2.3)
10      actionview (= 5.2.3)
11      activejob (= 5.2.3)
12      mail (~> 2.5, >= 2.5.4)
13      rails-dom-testing (~> 2.0)
14    actionpack (5.2.3)
15      actionview (= 5.2.3)
16      activesupport (= 5.2.3)
17      rack (~> 2.0)
18      rack-test (>= 0.6.3)
19      rails-dom-testing (~> 2.0)
20      rails-html-sanitizer (~> 1.0, >= 1.0.2)
21    actionview (5.2.3)
22      activesupport (= 5.2.3)
23      builder (~> 3.1)
24      erubi (~> 1.4)
25      rails-dom-testing (~> 2.0)
26      rails-html-sanitizer (~> 1.0, >= 1.0.3)
27    activejob (5.2.3)
28      activesupport (= 5.2.3)
29      globalid (>= 0.3.6)
30    activemodel (5.2.3)
31      activesupport (= 5.2.3)
32    activerecord (5.2.3)
33      activemodel (= 5.2.3)
34      activesupport (= 5.2.3)
35      arel (>= 9.0)
36    activestorage (5.2.3)
37      actionpack (= 5.2.3)
38      activerecord (= 5.2.3)
39      marcel (~> 0.3.1)
40    activesupport (5.2.3)
41      concurrent-ruby (~> 1.0, >= 1.0.2)
42      i18n (>= 0.7, < 2)
43      minitest (~> 5.1)
44      tzinfo (~> 1.1)
45    addressable (2.6.0)
46      public_suffix (>= 2.0.2, < 4.0)
47    archive-zip (0.12.0)
48      io-like (~> 0.3.0)
49    arel (9.0.0)
50    autoprefixer-rails (9.5.1.1)
51      execjs
52    bindex (0.7.0)
53    bootsnap (1.4.4)
54      msgpack (~> 1.0)
55    bootstrap (4.3.1)
56      autoprefixer-rails (>= 9.1.0)
57      popper_js (>= 1.14.3, < 2)
58      sassc-rails (>= 2.0.0)
59    builder (3.2.3)
60    byebug (11.0.1)
61    capybara (3.21.0)
62      addressable
63      mini_mime (>= 0.1.3)
64      nokogiri (~> 1.8)
65      rack (>= 1.6.0)
66      rack-test (>= 0.6.3)
67      regexp_parser (~> 1.5)
68      xpath (~> 3.2)
69    childprocess (1.0.1)
70      rake (< 13.0)
71    chromedriver-helper (2.1.1)
72      archive-zip (~> 0.10)
73      nokogiri (~> 1.8)
74    coffee-rails (4.2.2)
75      coffee-script (>= 2.2.0)
76      railties (>= 4.0.0)
77    coffee-script (2.4.1)
78      coffee-script-source
79      execjs
80    coffee-script-source (1.12.2)
81    concurrent-ruby (1.1.5)
82    crass (1.0.4)
83    erubi (1.8.0)
84    execjs (2.7.0)
85    ffi (1.11.1)
86    globalid (0.4.2)
87      activesupport (>= 4.2.0)
88    i18n (1.6.0)
89      concurrent-ruby (~> 1.0)
90    io-like (0.3.0)
91    jbuilder (2.9.1)
92      activesupport (>= 4.2.0)
93    jquery-rails (4.3.3)
94      rails-dom-testing (>= 1, < 3)
95      railties (>= 4.2.0)
96      thor (>= 0.14, < 2.0)
97    kaminari (1.1.1)
98      activesupport (>= 4.1.0)
99      kaminari-actionview (= 1.1.1)
100      kaminari-activerecord (= 1.1.1)
101      kaminari-core (= 1.1.1)
102    kaminari-actionview (1.1.1)
103      actionview
104      kaminari-core (= 1.1.1)
105    kaminari-activerecord (1.1.1)
106      activerecord
107      kaminari-core (= 1.1.1)
108    kaminari-core (1.1.1)
109    libv8 (7.3.492.27.1)
110    listen (3.1.5)
111      rb-fsevent (~> 0.9, >= 0.9.4)
112      rb-inotify (~> 0.9, >= 0.9.7)
113      ruby_dep (~> 1.2)
114    loofah (2.2.3)
115      crass (~> 1.0.2)
116      nokogiri (>= 1.5.9)
117    mail (2.7.1)
118      mini_mime (>= 0.1.1)
119    marcel (0.3.3)
120      mimemagic (~> 0.3.2)
121    method_source (0.9.2)
122    mimemagic (0.3.3)
123    mini_mime (1.0.1)
124    mini_portile2 (2.4.0)
125    mini_racer (0.2.6)
126      libv8 (>= 6.9.411)
127    minitest (5.11.3)
128    msgpack (1.2.10)
129    mysql2 (0.5.2)
130    nio4r (2.3.1)
131    nokogiri (1.10.3)
132      mini_portile2 (~> 2.4.0)
133    pg (1.1.4)
134    popper_js (1.14.5)
135    public_suffix (3.0.3)
136    puma (3.12.1)
137    rack (2.0.7)
138    rack-test (1.1.0)
139      rack (>= 1.0, < 3)
140    rails (5.2.3)
141      actioncable (= 5.2.3)
142      actionmailer (= 5.2.3)
143      actionpack (= 5.2.3)
144      actionview (= 5.2.3)
145      activejob (= 5.2.3)
146      activemodel (= 5.2.3)
147      activerecord (= 5.2.3)
148      activestorage (= 5.2.3)
149      activesupport (= 5.2.3)
150      bundler (>= 1.3.0)
151      railties (= 5.2.3)
152      sprockets-rails (>= 2.0.0)
153    rails-dom-testing (2.0.3)
154      activesupport (>= 4.2.0)
155      nokogiri (>= 1.6)
156    rails-html-sanitizer (1.0.4)
157      loofah (~> 2.2, >= 2.2.2)
158    railties (5.2.3)
159      actionpack (= 5.2.3)
160      activesupport (= 5.2.3)
161      method_source
162      rake (>= 0.8.7)
163      thor (>= 0.19.0, < 2.0)
164    rake (12.3.2)
165    rb-fsevent (0.10.3)
166    rb-inotify (0.10.0)
167      ffi (~> 1.0)
168    regexp_parser (1.5.1)
169    ruby_dep (1.5.0)
170    rubyzip (1.2.3)
171    sass (3.7.4)
172      sass-listen (~> 4.0.0)
173    sass-listen (4.0.0)
174      rb-fsevent (~> 0.9, >= 0.9.4)
175      rb-inotify (~> 0.9, >= 0.9.7)
176    sass-rails (5.0.7)
177      railties (>= 4.0.0, < 6)
178      sass (~> 3.1)
179      sprockets (>= 2.8, < 4.0)
180      sprockets-rails (>= 2.0, < 4.0)
181      tilt (>= 1.1, < 3)
182    sassc (2.0.1)
183      ffi (~> 1.9)
184      rake
185    sassc-rails (2.1.1)
186      railties (>= 4.0.0)
187      sassc (>= 2.0)
188      sprockets (> 3.0)
189      sprockets-rails
190      tilt
191    selenium-webdriver (3.142.3)
192      childprocess (>= 0.5, < 2.0)
193      rubyzip (~> 1.2, >= 1.2.2)
194    spring (2.0.2)
195      activesupport (>= 4.2)
196    spring-watcher-listen (2.0.1)
197      listen (>= 2.7, < 4.0)
198      spring (>= 1.2, < 3.0)
199    sprockets (3.7.2)
200      concurrent-ruby (~> 1.0)
201      rack (> 1, < 3)
202    sprockets-rails (3.2.1)
203      actionpack (>= 4.0)
204      activesupport (>= 4.0)
205      sprockets (>= 3.0.0)
206    thor (0.20.3)
207    thread_safe (0.3.6)
208    tilt (2.0.9)
209    turbolinks (5.2.0)
210      turbolinks-source (~> 5.2)
211    turbolinks-source (5.2.0)
212    tzinfo (1.2.5)
213      thread_safe (~> 0.1)
214    uglifier (4.1.20)
215      execjs (>= 0.3.0, < 3)
216    web-console (3.7.0)
217      actionview (>= 5.0)
218      activemodel (>= 5.0)
219      bindex (>= 0.4.0)
220      railties (>= 5.0)
221    websocket-driver (0.7.0)
222      websocket-extensions (>= 0.1.0)
223    websocket-extensions (0.1.3)
224    xpath (3.2.0)
225      nokogiri (~> 1.8)
226
227PLATFORMS
228  ruby
229
230DEPENDENCIES
231  bootsnap (>= 1.1.0)
232  bootstrap (~> 4.3.1)
233  byebug
234  capybara (>= 2.15)
235  chromedriver-helper
236  coffee-rails (~> 4.2)
237  jbuilder (~> 2.5)
238  jquery-rails
239  kaminari (~> 1.1.1)
240  listen (>= 3.0.5, < 3.2)
241  mini_racer
242  mysql2 (>= 0.4.4, < 0.6.0)
243  pg
244  puma (~> 3.11)
245  rails (~> 5.2.3)
246  regexp_parser (~> 1.5.1)
247  sass-rails (~> 5.0)
248  selenium-webdriver
249  spring
250  spring-watcher-listen (~> 2.0.0)
251  turbolinks (~> 5)
252  tzinfo-data
253  uglifier (>= 1.3.0)
254  web-console (>= 3.3.0)
255
256RUBY VERSION
257   ruby 2.6.3p62
258
259BUNDLED WITH
260   1.17.2
261