Docker: remove hafas-client ID generation

related:
- ee70e62
- derhuerst/bvg-rest#4
- https://github.com/public-transport/hafas-client/blob/3/lib/generate-install-id.js

Dockerfile

@@ -13,4 +13,4 @@ EXPOSE 3000
 ENV HOSTNAME 2.db.transport.rest
 ENV PORT 3000
 
-CMD ["/bin/sh", "docker-entrypoint.sh"]
+CMD ["node", "index.js"]

docker-entrypoint.sh

@@ -1,4 +0,0 @@
-#!/bin/sh
-
-npm explore hafas-client -- npm run install
-npm start