Makefile.eve: make linuxkit tmp dir user-specific

Avoids collisions when multiple users build on the same host.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: Christoph Ostarek <christoph@zededa.com>

Author: 2 people

Makefile.eve

@@ -30,9 +30,9 @@ LINUXKIT_GIT_REF ?= 3bf33c3a11fc20b459195294a7d8980cbca4195b
 
 ifneq ($(LINUXKIT_GIT_URL),)
 _LK_VERSION := $(shell printf '%s' '$(LINUXKIT_GIT_REF)' | cut -c1-12)
-LK := /tmp/linuxkit-$(_LK_VERSION)
+LK := /tmp/linuxkit-$(_LK_VERSION)-$(USER)
 else
-LK := /tmp/linuxkit-$(LINUXKIT_VERSION)
+LK := /tmp/linuxkit-$(LINUXKIT_VERSION)-$(USER)
 endif
 
 SOURCE_DATE_EPOCH=$(shell git log -1 --format=%ct)