add ci workflow (#1)

* add ci workflow with build and test

* add job for build and pushing images

* fix dependency name

* specify exact version for setup-pack action

* remove line escapes for pack command

* correct indentation on pack command

* build once and tag and push separately

* push all tags at once (excluding :latest)

* ignore generated credentials from google-github-actions/auth

* run on all pull requests

* run in parallel

* upgrade actions/setup-go to v5 due to deprecation of node 16

* set up go after checking out the code

.github/workflows/ci.yml

@@ -0,0 +1,79 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+env:
+  GO_VERSION: ^1.21.5
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build_and_test:
+    name: Build and test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -v ./...
+
+  package:
+    name: Build and push image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Pack
+        uses: buildpacks/github-actions/[email protected]
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata for images
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=tag
+            type=ref,event=pr
+            type=sha
+            type=sha,format=long
+
+      - name: Build images
+        run: |
+          pack build ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} \
+            --builder gcr.io/buildpacks/builder:v1 \
+            --env GOOGLE_FUNCTION_SIGNATURE_TYPE=http \
+            --env GOOGLE_FUNCTION_TARGET=ModProxy
+
+      - name: Tag and push images
+        run: |
+          echo "${{ steps.meta.outputs.tags }}" | while read tag
+          do
+            docker tag ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} $tag
+          done
+          docker rmi ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} --all-tags

.gitignore

@@ -19,3 +19,6 @@
 
 # Go workspace file
 go.work
+
+# Ignore generated credentials from google-github-actions/auth
+gha-creds-*.json