環境
Ruby:2.4.6
Rails:5.2.8
MySQL:5.7
対処法
タイトルの通り、以下のコマンドを実行後にRailsコンテナが起動しない(Exit1)事態に陥りました。
docker-compose up -d
ログは次のようになります。
web_1 | /usr/local/bundle/gems/loofah-2.21.1/lib/loofah/html4/document.rb:10:in `<module:HTML4>': uninitialized constant Nokogiri::HTML4 (NameError)
web_1 | Did you mean? Nokogiri::HTML
web_1 | from /usr/local/bundle/gems/loofah-2.21.1/lib/loofah/html4/document.rb:4:in `<module:Loofah>'
web_1 | from /usr/local/bundle/gems/loofah-2.21.1/lib/loofah/html4/document.rb:3:in `<main>'
web_1 | from /usr/local/bundle/gems/loofah-2.21.1/lib/loofah.rb:36:in `require_relative'
web_1 | from /usr/local/bundle/gems/loofah-2.21.1/lib/loofah.rb:36:in `<main>'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/rails-html-sanitizer-1.5.0/lib/rails-html-sanitizer.rb:2:in `<main>'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1/lib/action_view/helpers/sanitize_helper.rb:4:in `<main>'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1/lib/action_view/helpers/text_helper.rb:34:in `<module:TextHelper>'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1/lib/action_view/helpers/text_helper.rb:31:in `<module:Helpers>'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1/lib/action_view/helpers/text_helper.rb:8:in `<module:ActionView>'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1/lib/action_view/helpers/text_helper.rb:6:in `<main>'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
web_1 | from /usr/local/bundle/gems/actionview-5.2.8.1
対処法としては次のようになります。
- Gemfileに
gem 'loofah', '~> 2.19.0'を追加する - 以下のコマンドを実行してGemfile.lock上のloofahのバージョン指定を修正
docker-compose run web bundle update loofah
- ビルドを実行してgemをインストール。
docker-compose build
再度コンテナを起動するとステータスはUpになっており、無事解決しました。