python-docker: Add missing build dependency

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/python-docker/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=python-docker
 PKG_VERSION:=6.0.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PYPI_NAME:=docker
 PKG_HASH:=896c4282e5c7af5c45e8b683b0b0c33932974fe6e50fc6906a0a83616ab3da97
@@ -11,6 +11,8 @@ PKG_MAINTAINER:=Javier Marcet <javier@marcet.info>
 PKG_LICENSE:=Apache-2.0
 PKG_LICENSE_FILES:=LICENSE
 
+PKG_BUILD_DEPENDS:=python-setuptools-scm/host
+
 include ../pypi.mk
 include $(INCLUDE_DIR)/package.mk
 include ../python3-package.mk