You're absolutely right, but explaining the cost to the employer and/or the client and getting approvals to even use Docker will be a PITA. Currently for smalle

You're absolutely right, but explaining the cost to the employer and/or the client and getting approvals to even use Docker will be a PITA. Currently for smaller clients of the software house I work for we (normal employees) were able to use Docker whenever we felt like without manager's approval to optimize the deployment and maintenance costs on our side.