Build updates

Move to go 1.14

Explicitly apt-get update when building

Dockerfile.in

@@ -15,6 +15,7 @@
 FROM {ARG_FROM}
 
 RUN apt-get update \
+    && apt-get -y upgrade \
     && apt-get -y install \
         ca-certificates \
         coreutils \

Makefile

@@ -41,7 +41,7 @@ BASEIMAGE ?= k8s.gcr.io/debian-base:v2.0.0
 IMAGE := $(REGISTRY)/$(BIN)
 TAG := $(VERSION)__$(OS)_$(ARCH)
 
-BUILD_IMAGE ?= golang:1.13-alpine
+BUILD_IMAGE ?= golang:1.14-alpine
 
 # If you want to build all binaries, see the 'all-build' rule.
 # If you want to build all containers, see the 'all-container' rule.