FEAT: Artifact registry tag workflow (#7)

* upload artifact registry tag workflow

* add newline

Author: Gustavobelfort

.github/workflows/docker.yml

@@ -0,0 +1,52 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    tags:
+      - '*'
+
+env:
+  PROJECT_ID: portal-gb-prod
+  REPOSITORY: transaction-http-db
+  IMAGE: transaction-http-db
+  REGISTRY: us-central1-docker.pkg.dev
+
+jobs:
+  login-build-push:
+    name: Docker login, build, and push
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+      
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - id: 'auth'
+      name: 'Authenticate to Google Cloud'
+      uses: 'google-github-actions/[email protected]'
+      with:
+        credentials_json: '${{ secrets.GCP_CREDENTIALS }}'
+        token_format: 'access_token'
+
+    - name: Login to GAR
+      uses: docker/login-action@v2
+      with:
+        registry: "${{ env.REGISTRY }}"
+        username: oauth2accesstoken
+        password: ${{ steps.auth.outputs.access_token }}
+
+    - name: Get tag
+      id: get-tag
+      run: echo ::set-output name=short_ref::${GITHUB_REF#refs/*/}
+
+    - id: docker-push-tagged
+      name: Tag Docker image and push to Google Artifact Registry
+      uses: docker/build-push-action@v2
+      with:
+        build-args: GITHUB_TOKEN=${{ secrets.GH_ACCESS_TOKEN }}
+        push: true
+        tags: |
+            ${{ env.REGISTRY }}/${{ env.PROJECT_ID }}/${{ env.REPOSITORY }}/${{ env.IMAGE }}:${{ steps.get-tag.outputs.short_ref }}
+            ${{ env.REGISTRY }}/${{ env.PROJECT_ID }}/${{ env.REPOSITORY }}/${{ env.IMAGE }}:latest