DirExists checks if directory exists if given path is not empty.

GetAssetString returns a properly formatted asset string.

GetBinaryName checks if useBinary is in binDir and returns it.

PrepareAssets copies given assets to ACI rootfs directory.

RunCmdFull runs given execProg.

CommonConfiguration keeps configuration items common for all the builders.

CommonPaths keeps some paths common for all builders.

BuilderCustomizations is an interface for customizing a build process.