Docker wraps up application code in Linux containers and can be moved from one server to another in 2013. Since the open- source technology has taken off, dotCloud startup pivoted to focus on Docker and changed its name to Docker as well. Docker has sold dotCloud to cloudControl in 2014.

dotCloud email has suggested users to migrate applications to avoid service disruption of apps or to prevent data loss. To keep the migration effort as low as possible, it has also recommended migrating to Heroku, reports The Register.

The PaaS has expressed sincere sorrows for the inconveniences centering the migration. It has also thanked users through the mail for their trust in dotCloud.

dotCloud is based in Palo Alto, California while cloudControl hails from Berlin, Germany.  The latter has been forced to file for bankruptcy this week after one of its main clients drastically reduced its business with the cloud biz. However, dotCloud has remained only as a minor contributor to cloudControl's sales.

cloudControl has been reportedly working with the court- assigned lawyer to find a solution to continue operations for the European brand. But dotCloud business stands to be not sizeable enough to be saved.

The number of paying customers affected by the shutdown appears to be small. dotCloud has found enough time and resources to assist the customers even the 30 days' prior notice is not optimal. Furthermore, the compatibility to Heroku will also make the migrations very easy for customers.

dotCloud has once venture backed Silicon Valley's prominent start up, Y Combinator. The Platform as a Service (PaaS) has a long history to cherish. But its mother concern, German enterprise, cloudControl is now under bankruptcy trial. To facilitate the brand's operation in Europe, the mother concern has been compelled to pack up dotCloud operations. dotCloud will find the opportunity to serve its customers till the last day of the February.