hack/make/test-integration-cli: introduce MAKEDIR variable

- every execution of dirname costs time
- less repeating

Signed-off-by: Jörg Thalheim <joerg@higgsboson.tk>
Upstream-commit: 6533cb973f6bab672018148fd6a67644580cc61f
Component: engine

components/engine/hack/make/cross

@@ -28,6 +28,6 @@ for platform in $DOCKER_CROSSPLATFORMS; do
 			export LDFLAGS_STATIC_DOCKER="" # we just need a simple client for these platforms
 			export BUILDFLAGS=( "${ORIG_BUILDFLAGS[@]/ daemon/}" ) # remove the "daemon" build tag from platforms that aren't supported
 		fi
-		source "$(dirname "$BASH_SOURCE")/binary" "$DEST/$platform"
+		source "${MAKEDIR}/binary" "$DEST/$platform"
 	)
 done