fix typo

Dockerfile

@@ -14,15 +14,4 @@ COPY Gemfile /usr/src/app/
 COPY Gemfile.lock /usr/src/app/
 RUN bundle install
 
-COPY . /usr/src/app
-
-# set locale
-# RUN apt-get install -y locales
-# RUN dpkg-reconfigure locales && \
-#   locale-gen C.UTF-8 && \
-#   /usr/sbin/update-locale LANG=C.UTF-8
-# RUN echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && \
-#   locale-gen
-# ENV LC_ALL C.UTF-8
-# ENV LANG en_US.UTF-8
-# ENV LANGUAGE en_US.UTF-8
+COPY . /usr/src/app