build.gradle

def build_param = "${build}"
if (build_param == "devCI") {
    // Exclude all except mockDebug flavor
    android.variantFilter { variant ->
        if (variant.getFlavors().get(0).name != 'mock' || variant.buildType.name != 'debug') {
            variant.setIgnore(true)
        }
    }
} else if (build_param == "releaseCI") {
    // Exclude all except prodRelease flavor
    android.variantFilter { variant ->
        if (variant.getFlavors().get(0).name != 'prod' || variant.buildType.name != 'release') {
            variant.setIgnore(true)
        }
    }
} else {
    // Normal local machine dev
    // Exclude mockRelease as it's not needed.
    android.variantFilter { variant ->
        if(variant.buildType.name == 'release' && variant.getFlavors().get(0).name == 'mock') {
            variant.setIgnore(true)
        }
    }
}