Fix released image to output desired version

Dockerfile

@@ -25,13 +25,14 @@ ARG COVERALLS_TOKEN
 ENV COVERALLS_TOKEN $COVERALLS_TOKEN
 
 ARG TEST_TARGET
+ARG GO_BUILD_TAGS
 
 ENV JUNIT_REPORT_DIR $GOPATH/src/github.com/weaveworks/eksctl/test-results/ginkgo
 RUN mkdir -p "${JUNIT_REPORT_DIR}"
 
 WORKDIR $EKSCTL
 RUN make $TEST_TARGET
-RUN make build \
+RUN make build GO_BUILD_TAGS="${GO_BUILD_TAGS}" \
     && cp ./eksctl /out/usr/local/bin/eksctl
 RUN make build-integration-test \
     && mkdir -p /out/usr/local/share/eksctl \

Makefile

@@ -6,6 +6,8 @@ version_pkg := github.com/weaveworks/eksctl/pkg/version
 EKSCTL_BUILD_IMAGE ?= weaveworks/eksctl-build:latest
 EKSCTL_IMAGE ?= weaveworks/eksctl:latest
 
+GO_BUILD_TAGS ?= netgo
+
 .DEFAULT_GOAL := help
 
 ##@ Dependencies
@@ -18,7 +20,7 @@ install-build-deps: ## Install dependencies (packages and tools)
 
 .PHONY: build
 build: ## Build eksctl
-	@CGO_ENABLED=0 go build -tags "netgo" -ldflags "-X $(version_pkg).gitCommit=$(git_commit) -X $(version_pkg).builtAt=$(built_at)" ./cmd/eksctl
+	CGO_ENABLED=0 go build -tags "$(GO_BUILD_TAGS)" -ldflags "-X $(version_pkg).gitCommit=$(git_commit) -X $(version_pkg).builtAt=$(built_at)" ./cmd/eksctl
 
 ##@ Testing & CI
 
@@ -122,7 +124,10 @@ eksctl-build-image: ## Create the the eksctl build docker image
 	@-docker pull $(EKSCTL_BUILD_IMAGE)
 	@docker build --tag=$(EKSCTL_BUILD_IMAGE) --cache-from=$(EKSCTL_BUILD_IMAGE) ./build
 
-EKSCTL_IMAGE_BUILD_ARGS := --build-arg=EKSCTL_BUILD_IMAGE=$(EKSCTL_BUILD_IMAGE)
+EKSCTL_IMAGE_BUILD_ARGS := \
+  --build-arg=EKSCTL_BUILD_IMAGE=$(EKSCTL_BUILD_IMAGE) \
+  --build-arg=GO_BUILD_TAGS=$(GO_BUILD_TAGS)
+
 ifneq ($(COVERALLS_TOKEN),)
 EKSCTL_IMAGE_BUILD_ARGS += --build-arg=COVERALLS_TOKEN=$(COVERALLS_TOKEN)
 endif

skaffold.yaml

@@ -5,7 +5,7 @@ profiles:
 
   - name: local
     build:
-      local: 
+      local:
         push: false
         useBuildkit: true
       tagPolicy:
@@ -23,7 +23,7 @@ profiles:
 
   - name: push-any-commit
     build:
-      local: 
+      local:
         push: true
         useBuildkit: true
       artifacts:
@@ -36,9 +36,25 @@ profiles:
             EKSCTL_BUILD_IMAGE: weaveworks/eksctl-build:local
             TEST_TARGET: test
 
+  - name: push-release
+    build:
+      local:
+        push: true
+        useBuildkit: true
+      artifacts:
+      - image: weaveworks/eksctl-build
+        context: ./build
+      - image: weaveworks/eksctl
+        context: ./
+        docker:
+          buildArgs:
+            EKSCTL_BUILD_IMAGE: weaveworks/eksctl-build:local
+            TEST_TARGET: test
+            GO_BUILD_TAGS: netgo release
+
   - name: local-from-cache
     build:
-      local: 
+      local:
         push: false
         useBuildkit: true
       tagPolicy:
@@ -59,7 +75,7 @@ profiles:
 
   - name: push-cache
     build:
-      local: 
+      local:
         push: true
         useBuildkit: true
       tagPolicy: