build: use goreleaser to build and publis images

Signed-off-by: Leonardo Grasso <me@leonardograsso.com>

.goreleaser.yml

@@ -14,6 +14,29 @@ builds:
       - CGO_ENABLED=0
     binary: falco-exporter
 
+dockers:
+  -
+    goos: linux
+    goarch: amd64
+    skip_push: false
+    dockerfile: build/Dockerfile
+    image_templates:
+      - "falcosecurity/falco-exporter:latest"
+      - "falcosecurity/falco-exporter:{{ .Version }}"
+      - "falcosecurity/falco-exporter:{{ .Major }}.{{ .Minor }}"
+    build_flag_templates:
+      - "--pull"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.name={{.ProjectName}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+    extra_files:
+      - cmd
+      - pkg
+      - go.mod
+      - go.sum
+      - Makefile
+
 snapshot:
   name_template: 'master'
 

Makefile

@@ -1,47 +1,14 @@
 SHELL=/bin/bash -o pipefail
 
-DOCKER ?= docker
 GO ?= go
 HELM ?= helm
 
-COMMIT_NO := $(shell git rev-parse HEAD 2> /dev/null || true)
-GIT_COMMIT := $(if $(shell git status --porcelain --untracked-files=no),${COMMIT_NO}-dirty,${COMMIT_NO})
-GIT_BRANCH ?= $(shell git rev-parse --abbrev-ref HEAD 2>/dev/null)
-GIT_BRANCH_CLEAN := $(shell echo $(GIT_BRANCH) | sed -e "s/[^[:alnum:]]/-/g")
-
-IMAGE_NAME_BUILDER_BASE ?= docker.io/falcosecurity/falco-exporter
-
-IMAGE_NAME_BUILDER_BASE_BRANCH := $(IMAGE_NAME_BUILDER_BASE):$(GIT_BRANCH_CLEAN)
-IMAGE_NAME_BUILDER_BASE_COMMIT := $(IMAGE_NAME_BUILDER_BASE):$(GIT_COMMIT)
-IMAGE_NAME_BUILDER_BASE_LATEST := $(IMAGE_NAME_BUILDER_BASE):latest
-
 TEST_FLAGS ?= -v -race
 
-export GO111MODULE=on
-
 .PHONY: falco-exporter
 falco-exporter:
 	$(GO) build ./cmd/falco-exporter
 
-.PHONY: image/build
-image/build:
-	$(DOCKER) build \
-		-t "$(IMAGE_NAME_BUILDER_BASE_BRANCH)" \
-		-f build/Dockerfile .
-	$(DOCKER) tag $(IMAGE_NAME_BUILDER_BASE_BRANCH) $(IMAGE_NAME_BUILDER_BASE_COMMIT)
-	$(DOCKER) tag "$(IMAGE_NAME_BUILDER_BASE_BRANCH)" $(IMAGE_NAME_BUILDER_BASE_COMMIT)
-
-
-.PHONY: image/push
-image/push:
-	$(DOCKER) push $(IMAGE_NAME_BUILDER_BASE_BRANCH)
-	$(DOCKER) push $(IMAGE_NAME_BUILDER_BASE_COMMIT)
-
-.PHONY: image/latest
-image/latest:
-	$(DOCKER) tag $(IMAGE_NAME_BUILDER_BASE_COMMIT) $(IMAGE_NAME_BUILDER_BASE_LATEST)
-	$(DOCKER) push $(IMAGE_NAME_BUILDER_BASE_LATEST)
-
 .PHONY: deploy/k8s/templates
 deploy/k8s/templates:
 	rm -rf deploy/k8s/templates/*

release.md

@@ -1,8 +1,6 @@
 # Release Process
 
-Currently, our release process is partially automated. We use: 
-- the [goreleaser](https://github.com/goreleaser/goreleaser) tool for artifacts
-- the provided `Makefile` for the container image
+Currently, our release process is partially automated. We use the [goreleaser](https://github.com/goreleaser/goreleaser) tool for artifacts.
 
 When we release we do the following process:
 
@@ -27,15 +25,7 @@ export GITHUB_TOKEN=<YOUR_GH_TOKEN>
 goreleaser --rm-dist
 ```
 
-Finally, build and publish the container image
-
-```
-make image/build
-make image/push
-make image/latest
-```
-
 ## TODO
 
-- [ ] Setup goreleaser [on a CI system](https://goreleaser.com/ci/), ie., CircleCI
-- [ ] Build and publish images using a CI system, ie., CircleCI
+- [x] Setup goreleaser to build and publish images
+- [ ] Setup goreleaser [on a CI system](https://goreleaser.com/ci/), ie., CircleCI