Fix typo in dockerfile

Dockerfile

 FROM mongo
 COPY ./data/orders.json /orders.json
-CMD mongoimport --host mongo-karibou --db order --collection orders --type json --file orders.json --jsonArray && mongo --host mongo-karibou order --eval 'db.orders.find( { "customer.id.floatApprox": { $exists: true } } ).forEach( tr => db.orders.update({_id: tr._id},{$set:{"customer.id": tr.customer.id.floatApprox}}  ) )' && mongo --host mongo-karibou order --eval 'db.orders.find().forEach( tr => db.orders.update({_id: tr._id}, {$set:{"shipping.when": new Date(tr.shipping.when)}}))'
+CMD mongoimport --host mongo-orders --db order --collection orders --type json --file orders.json --jsonArray && mongo --host mongo-orders order --eval 'db.orders.find( { "customer.id.floatApprox": { $exists: true } } ).forEach( tr => db.orders.update({_id: tr._id},{$set:{"customer.id": tr.customer.id.floatApprox}}  ) )' && mongo --host mongo-orders order --eval 'db.orders.find().forEach( tr => db.orders.update({_id: tr._id}, {$set:{"shipping.when": new Date(tr.shipping.when)}}))'

README.md

@@ -12,7 +12,7 @@ docker-compose exec mongo-orders mongo admin
 in mongodb shell:
 ```
 show dbs;
-use orders;
+use order;
 show collections;
 db.orders.find();
 ```