Several fixes related to the existing release tooling. No changes otherwise.

Signed-off-by: Erik Hollensbe <github@hollensbe.org>

Makefile

@@ -15,13 +15,16 @@ DOCKER_CMD := docker run -it \
 	-v ${PWD}:$(CODE_PATH) \
 	$(IMAGE_NAME)
 
-release: distclean generate-check
+mkcache:
+	mkdir -p .go-cache
+
+release: distclean generate-check mkcache
 	GOBIN=${PWD}/build/ldnsd-$$(cat VERSION) VERSION=$$(cat VERSION) make lint install
 	# FIXME include LICENSE.md
 	cp README.md example.conf build/ldnsd-$$(cat VERSION)
 	cd build && tar cvzf ../ldnsd-$$(cat ../VERSION).tar.gz ldnsd-$$(cat ../VERSION)
 
-release-image:
+release-image: mkcache
 	VERSION=$$(cat VERSION) box -t $(RELEASE_IMAGE_NAME) box-release.rb
 
 distclean:
@@ -36,7 +39,7 @@ shell: build
 	mkdir -p .go-cache
 	$(DOCKER_CMD)	
 
-build: get-box
+build: get-box mkcache
 	box -t $(IMAGE_NAME) box.rb
 
 docker-check:

proto/control.pb.go

@@ -8,7 +8,6 @@ package proto
 
 import (
 	context "context"
-	proto "github.com/golang/protobuf/proto"
 	empty "github.com/golang/protobuf/ptypes/empty"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -26,10 +25,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 type Records struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache