script/release_build: enable selinux-vs-dmz workaround

Since the binaries we publish should work on every distro (including
CentOS 7, which is still supported, but won't get updated
container-selinux), let's enable selinux-vz-dmz workaround.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

script/release_build.sh

@@ -59,6 +59,8 @@ function build_project() {
 	# the provided libseccomp, not the system one (otherwise
 	# it can reuse cached pkg-config results).
 	local make_args=(COMMIT_NO= EXTRA_FLAGS="-a" EXTRA_LDFLAGS="${ldflags}" static)
+	# Enable selinux-vs-dmz workaround for older distros.
+	make_args+=(EXTRA_BUILDTAGS=runc_dmz_selinux_compat)
 
 	# Save the original cflags.
 	local original_cflags="${CFLAGS:-}"