Merge pull request #173 from ArangoGutierrez/devel-v0.6

dockerfile: builder image configurable through a Makefile variable.

Dockerfile

@@ -1,7 +1,8 @@
+ARG BUILDER_IMAGE
 ARG BASE_IMAGE_FULL
 ARG BASE_IMAGE_MINIMAL
 # Build the manager biinary
-FROM golang:1.19.5-buster as builder
+FROM ${BUILDER_IMAGE} as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests

Makefile

@@ -4,6 +4,7 @@
 
 GO_CMD ?= go
 GO_FMT ?= gofmt
+GO_VERSION := $(shell awk '/^go /{print $$2}' go.mod|head -n1)
 CONTAINER_RUN_CMD ?= docker run -u "`id -u`:`id -g`"
 
 # Docker base command for working with html documentation.
@@ -62,6 +63,7 @@ IMAGE_EXTRA_TAG_NAMES ?=
 IMAGE_REPO ?= $(IMAGE_REGISTRY)/$(IMAGE_NAME)
 IMAGE_TAG ?= $(IMAGE_REPO):$(IMAGE_TAG_NAME)
 IMAGE_EXTRA_TAGS := $(foreach tag,$(IMAGE_EXTRA_TAG_NAMES),$(IMAGE_REPO):$(tag))
+BUILDER_IMAGE ?= golang:$(GO_VERSION)-buster
 BASE_IMAGE_FULL ?= debian:buster-slim
 BASE_IMAGE_MINIMAL ?= gcr.io/distroless/base
 
@@ -173,6 +175,7 @@ generate: controller-gen
 image:
 	$(IMAGE_BUILD_CMD) -t $(IMAGE_TAG) \
 		--target full \
+		--build-arg BUILDER_IMAGE=$(BUILDER_IMAGE) \
 		--build-arg BASE_IMAGE_FULL=$(BASE_IMAGE_FULL) \
 		--build-arg BASE_IMAGE_MINIMAL=$(BASE_IMAGE_MINIMAL) \
 		$(foreach tag,$(IMAGE_EXTRA_TAGS),-t $(tag)) \
@@ -181,6 +184,7 @@ image:
 image-minimal:
 	$(IMAGE_BUILD_CMD) -t $(IMAGE_TAG)-minimal \
 		--target minimal \
+		--build-arg BUILDER_IMAGE=$(BUILDER_IMAGE) \
 		--build-arg BASE_IMAGE_FULL=$(BASE_IMAGE_FULL) \
 		--build-arg BASE_IMAGE_MINIMAL=$(BASE_IMAGE_MINIMAL) \
 		$(foreach tag,$(IMAGE_EXTRA_TAGS),-t $(tag)-minimal) \