use --locked during cargo install to use the package lock #12

debian/rules

@@ -26,7 +26,7 @@ export VW_VERSION = $(DEB_VERSION_UPSTREAM)
 # I don't have any experience with rust and couldn't quite grasp how I could split the compiling and installing. For now there is one command that does everything in the `dh_auto_install` step.
 override_dh_auto_install:
 	mkdir -p debian/tmp/usr
-	cargo install $(cargoinstallargs) --path . --features sqlite,mysql,postgresql --root debian/tmp
+	cargo install $(cargoinstallargs) --locked --path . --features sqlite,mysql,postgresql --root debian/tmp
 	mv debian/tmp/bin debian/tmp/usr
 
 # use upstream env template as defaults with some maintainer defaults