ci: migrate to gh actions

.github/dependabot.yaml

@@ -0,0 +1,14 @@
+# Dependabot configuration
+#
+# For more information, please refer to:
+#   https://docs.github.com/en/code-security/dependabot/dependabot-version-updates
+
+version: 2
+
+updates:
+
+# Maintain dependencies for GitHub Actions
+- package-ecosystem: github-actions
+  directory: /
+  schedule:
+    interval: weekly

.github/workflows/build-and-release.yaml

@@ -0,0 +1,86 @@
+name: Build and Release
+
+on:
+  workflow_dispatch:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+
+jobs:
+  publish-images:
+    name: Build and publish image
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - runtime: java8
+        - runtime: node10
+        - runtime: node4
+        - runtime: python27
+        - runtime: python37
+        - runtime: ruby25
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to GCR
+      uses: docker/login-action@v2
+      with:
+        registry: gcr.io
+        username: _json_key
+        password: ${{ secrets.GCLOUD_SERVICEACCOUNT_KEY }}
+      if: github.event_name != 'pull_request'
+
+    - name: Docker metadata
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: gcr.io/triggermesh/knative-lambda-${{ matrix.runtime }}
+        tags: |
+          type=semver,pattern={{raw}}
+          type=sha,prefix=,suffix=,format=long
+
+    - name: Build and push image
+      uses: docker/build-push-action@v4
+      with:
+        provenance: false
+        context: ${{ matrix.runtime }}
+        file: ${{ matrix.runtime }}/Dockerfile
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+
+  create-release:
+    name: Create Release
+    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    needs: publish-images
+    permissions:
+      contents: write
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Preparing Release Notes
+      run: |
+        ./scripts/release-notes.sh ${GITHUB_REF_NAME} > release-notes.md
+
+    - name: Creating Release
+      uses: ncipollo/release-action@v1
+      with:
+        bodyFile: "release-notes.md"

Makefile

@@ -6,10 +6,9 @@ BASE_DIR          ?= $(CURDIR)
 
 DOCKER            ?= docker
 IMAGE_REPO        ?= gcr.io/triggermesh
-IMAGE_TAG         ?= latest
-IMAGE_SHA         ?= $(shell git rev-parse HEAD)
+IMAGE_TAG         ?= $(shell git rev-parse HEAD)
 
-.PHONY: help images cloudbuild-test cloudbuild
+.PHONY: help images
 
 all: images
 
@@ -19,14 +18,4 @@ help: ## Display this help
 IMAGES = $(foreach r,$(RUNTIMES),$(r).image)
 images: $(IMAGES) ## Build the Docker images
 $(IMAGES): %.image:
-	docker build -t $(IMAGE_REPO)/knative-lambda-$* $*
-
-CLOUDBUILD_TEST = $(foreach r,$(RUNTIMES),$(r).cloudbuild-test)
-cloudbuild-test: $(CLOUDBUILD_TEST) ## Test container image build with Google Cloud Build
-$(CLOUDBUILD_TEST): %.cloudbuild-test:
-	gcloud builds submit $* --config cloudbuild.yaml --substitutions _RUNTIME=knative-lambda-$*,COMMIT_SHA=${IMAGE_SHA},_KANIKO_USE_BUILD_CACHE=false,_KANIKO_IMAGE_TAG=_
-
-CLOUDBUILD = $(foreach r,$(RUNTIMES),$(r).cloudbuild)
-cloudbuild: $(CLOUDBUILD) ## Build and publish image to GCR
-$(CLOUDBUILD): %.cloudbuild:
-	gcloud builds submit $* --config cloudbuild.yaml --substitutions _RUNTIME=knative-lambda-$*,COMMIT_SHA=${IMAGE_SHA},_KANIKO_USE_BUILD_CACHE=false,_KANIKO_IMAGE_TAG=${IMAGE_TAG}
+	docker build -t $(IMAGE_REPO)/knative-lambda-$*:${IMAGE_TAG} $*