Just as with Amazon solution, this seems to not have caching. Baking deps into a separate image is a good solution, but oftentimes you want to rely on docker ca

Just as with Amazon solution, this seems to not have caching. Baking deps into a separate image is a good solution, but oftentimes you want to rely on docker caching itself. For example docker caches `npm install` quite nicely if you split up the copying of package.json to a separate layer, which allows for a very neat flow where small app diffs result in a fast build, while adding new npm packages results in a slightly longer build. Not possible with GCCB or AWS CodeBuild.. For now, a self-managed Atlassian Bamboo instance (which can and does do caching for each worker) seems to be the best way?