use centralized builder image (#264)

* use centralized builder image

* cleanup for tests

* get go version from go.mod

* remove unused var from Makefile

Makefile

@@ -1,12 +1,14 @@
-INTEGRATION     := docker
-BINARY_NAME      = nri-$(INTEGRATION)
-SRC_DIR          = ./src/
-VALIDATE_DEPS    = golang.org/x/lint/golint
-INTEGRATIONS_DIR = /var/db/newrelic-infra/newrelic-integrations/
-CONFIG_DIR       = /etc/newrelic-infra/integrations.d
-GO_FILES        := ./src/
-GOOS             = GOOS=linux
-GO               = $(GOOS) go
+INTEGRATION     	:= docker
+BINARY_NAME      	= nri-$(INTEGRATION)
+SRC_DIR          	= ./src/
+VALIDATE_DEPS    	= golang.org/x/lint/golint
+INTEGRATIONS_DIR 	= /var/db/newrelic-infra/newrelic-integrations/
+CONFIG_DIR       	= /etc/newrelic-infra/integrations.d
+GO_FILES        	:= ./src/
+GOOS             	= GOOS=linux
+GO               	= $(GOOS) go
+GO_VERSION 			?= $(shell grep '^go ' go.mod | awk '{print $$2}')
+BUILDER_IMAGE 		?= "ghcr.io/newrelic/coreint-automation:latest-go$(GO_VERSION)-ubuntu16.04"
 
 all: build
 

build/ci.mk

@@ -1,8 +1,9 @@
-BUILDER_TAG ?= nri-$(INTEGRATION)-builder
+.PHONY : ci/pull-builder-image
+ci/pull-builder-image:
+	@docker pull $(BUILDER_IMAGE)
 
 .PHONY : ci/deps
-ci/deps:
-	@docker build -t $(BUILDER_TAG) -f $(CURDIR)/build/Dockerfile $(CURDIR)
+ci/deps: ci/pull-builder-image
 
 .PHONY : ci/debug-container
 ci/debug-container: ci/deps
@@ -17,23 +18,23 @@ ci/debug-container: ci/deps
 			-e GPG_MAIL \
 			-e GPG_PASSPHRASE \
 			-e GPG_PRIVATE_KEY_BASE64 \
-			$(BUILDER_TAG) bash
+			$(BUILDER_IMAGE) bash
 
 .PHONY : ci/validate
 ci/validate: ci/deps
 	@docker run --rm -t \
 			--name "nri-$(INTEGRATION)-validate" \
 			-v $(CURDIR):/go/src/github.com/newrelic/nri-$(INTEGRATION) \
 			-w /go/src/github.com/newrelic/nri-$(INTEGRATION) \
-			$(BUILDER_TAG) make validate
+			$(BUILDER_IMAGE) make validate
 
 .PHONY : ci/test
 ci/test: ci/deps
 	@docker run --rm -t \
 			--name "nri-$(INTEGRATION)-test" \
 			-v $(CURDIR):/go/src/github.com/newrelic/nri-$(INTEGRATION) \
 			-w /go/src/github.com/newrelic/nri-$(INTEGRATION) \
-			$(BUILDER_TAG) make test
+			$(BUILDER_IMAGE) make test
 
 .PHONY : ci/build
 ci/build: ci/deps
@@ -44,7 +45,7 @@ ifdef TAG
 			-w /go/src/github.com/newrelic/nri-$(INTEGRATION) \
 			-e INTEGRATION \
 			-e TAG \
-			$(BUILDER_TAG) make release/build
+			$(BUILDER_IMAGE) make release/build
 else
 	@echo "===> $(INTEGRATION) ===  [ci/build] TAG env variable expected to be set"
 	exit 1
@@ -65,7 +66,7 @@ ifdef TAG
 			-e GPG_MAIL \
 			-e GPG_PASSPHRASE \
 			-e GPG_PRIVATE_KEY_BASE64 \
-			$(BUILDER_TAG) make release
+			$(BUILDER_IMAGE) make release
 else
 	@echo "===> $(INTEGRATION) ===  [ci/prerelease] TAG env variable expected to be set"
 	exit 1