Moved all .env modifications to another layer

Unsure if another layer is that bad
But this improve .env changes rebuild times

jikan/Dockerfile

@@ -13,15 +13,16 @@ RUN	apt-get update && apt-get install -y \
 RUN	git clone https://github.com/jikan-me/jikan-rest.git -b v3 . \
 	&& git checkout v3 \
 	&& cp .env.dist .env \
-	&& sed -i "s/CACHE_DRIVER=.*/CACHE_DRIVER=redis/" .env \
-	&& sed -i "s/REDIS_HOST=.*/REDIS_HOST=jikan-redis/" .env \
-	&& sed -i "s/CACHE_404_EXPIRE=.*/CACHE_404_EXPIRE=3600/" .env \
-	&& sed -i "s/CACHE_SEARCH_EXPIRE=.*/CACHE_SEARCH_EXPIRE=1000/" .env \
-	&& sed -i "s/GITHUB_REPORTING=.*/GITHUB_REPORTING=false/" .env \
 	&& composer require 'composer/package-versions-deprecated' \
 	&& composer install --prefer-dist --no-progress --classmap-authoritative  --no-interaction \
 	&& composer update jikan-me/jikan
 
+RUN	sed    -i "s/CACHE_DRIVER=.*/CACHE_DRIVER=redis/" .env \
+	&& sed -i "s/REDIS_HOST=.*/REDIS_HOST=jikan-redis/" .env \
+	&& sed -i "s/CACHE_404_EXPIRE=.*/CACHE_404_EXPIRE=3600/" .env \
+	&& sed -i "s/CACHE_SEARCH_EXPIRE=.*/CACHE_SEARCH_EXPIRE=1000/" .env \
+	&& sed -i "s/GITHUB_REPORTING=.*/GITHUB_REPORTING=false/" .env
+
 ADD	/run-jikan.sh ./
 
 ENTRYPOINT ["./run-jikan.sh"]