Switch build target from main.go to a package. (k3s-io#8342)

* Switch build target from main.go to a package.
* Dont build with vcs

Signed-off-by: Dan Lorenc <dlorenc@chainguard.dev>
Signed-off-by: Derek Nola <derek.nola@suse.com>
Co-authored-by: Derek Nola <derek.nola@suse.com>

scripts/build

@@ -133,7 +133,7 @@ if [ ! -x ${INSTALLBIN}/cni ]; then
 fi
 
 echo Building k3s
-CGO_ENABLED=1 "${GO}" build $BLDFLAGS -tags "$TAGS" -gcflags="all=${GCFLAGS}" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/k3s ./cmd/server/main.go
+CGO_ENABLED=1 "${GO}" build $BLDFLAGS -tags "$TAGS" -buildvcs=false -gcflags="all=${GCFLAGS}" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/k3s ./cmd/server
 ln -s k3s ./bin/containerd
 ln -s k3s ./bin/crictl
 ln -s k3s ./bin/ctr