gh-actions: build and publish triggermesh-core controller image to gcr.io

Author: Sameer Naik

.dockerignore

@@ -0,0 +1,16 @@
+# Top level files and directories
+/.git/
+/.github/
+/test/
+/hack/
+!/hack/inc.Codegen.mk
+/.dockerignore
+
+# Patterns
+**/config/
+**/*.md
+**/*_test.go
+**/.gitignore
+**/Dockerfile
+
+# Binaries

.github/workflows/container.yaml

@@ -0,0 +1,52 @@
+name: Container images
+
+on:
+  workflow_dispatch:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+
+jobs:
+  container_image:
+    name: Build container image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - 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 }}
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: gcr.io/triggermesh/triggermesh-core
+          tags: |
+            type=semver,pattern={{raw}}
+            latest
+
+      - name: Build and push image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: cmd/core-controller/Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -19,7 +19,7 @@
 *.rej
 
 # Build artifacts
-/_output/
+/releases/
 
 # Test artifacts
 *.test

cmd/core-controller/Dockerfile

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+# Copyright 2022 TriggerMesh Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM golang:1.19 AS builder
+
+ENV CGO_ENABLED 0
+ENV GOOS linux
+ENV GOARCH amd64
+
+WORKDIR /go/src/project
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN go build -a -o triggermesh-core ./cmd/core-controller
+
+FROM gcr.io/distroless/static:nonroot
+
+COPY --from=builder /go/src/project/triggermesh-core /
+COPY LICENSE EULA.pdf /licenses/
+
+USER 65532:65532
+
+ENTRYPOINT ["/triggermesh-core"]