Dockerfile in jekyll-favicon-1.0.0.pre.2

- old
+ new

@@ -12,9 +12,9 @@
 # [Optional] Uncomment this section to install additional OS packages.
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
     && apt-get -y install --no-install-recommends imagemagick librsvg2-bin
 
 # [Optional] Uncomment this line to install additional gems.
-RUN gem install rubocop reek
+RUN gem install reek standard webrick
 
 # [Optional] Uncomment this line to install global node packages.
 # RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1