[crdoconnor]

>Agreed about preventing issues getting to production, but that doesn't exclusively mean heavyweight virtualization.

Well, it gets you a step closer to accurately mimicking production.

>It also doesn't "cover up" broken build scripts.

That seems to be what that 'build once' rule is for. If your building process isn't risky, why the need to prohibit running it twice?

[josegonzalez]

So that your build process is faster. If I can use the same container for local dev, continuous integration, staging, and production, that means I only had to build it once and the pipeline to get something from a developer's laptop to a production instance is much quicker.

Just because I can install the operating system doesn't mean I want to do this on every deploy of an application.