Update Dockerfile

Forcing stable git checkout

jikan/Dockerfile

@@ -11,7 +11,8 @@ RUN apt-get update && apt-get install -y \
  && a2enmod rewrite \
  && service apache2 restart \
  && git clone https://github.com/jikan-me/jikan-rest.git . \
- && composer install --prefer-dist --no-progress --no-suggest --classmap-authoritative  --no-interaction
+ && composer install --prefer-dist --no-progress --no-suggest --classmap-authoritative  --no-interaction \
+ && git checkout a3ce8dbe5c44403d6fa28c18e4bb11d79fb9ac31
 
 ADD .env /run-jikan.sh ./