Waiting for the right build has been a historical problem with test environments, while differences between development, test and production have caused defects to escape in production. Virtual Machines solve these problems by sharing a copy of system data, but they can be slow and take gigabytes of disk space.
Enter Docker, a lightweight, fast virtualization tool for Linux.
The opportunity Docker presents
First, anyone on a technical staff can create a test environment on the local machine in a few seconds. The new process hooks into the existing operating system, so it does not need to “boot.” With a previous build stored locally, Docker is smart enough to only load the difference between the two builds.
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