Add docker build job

.github/workflows/buildimage.yaml

@@ -0,0 +1,54 @@
+name: Locust build image
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - "master"
+defaults:
+  run:
+    shell: bash
+permissions:
+  contents: read
+  id-token: write
+concurrency:
+  group: "${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}"
+  cancel-in-progress: true
+env:
+  REGISTRY: us-east1-docker.pkg.dev/acuitymd-core-services/python
+  TAG: ${{ github.sha }}
+  ENV: dev
+jobs:
+  build-locust:
+    name: Locust build image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Authenticate to Google Cloud
+        id: auth
+        uses: google-github-actions/auth@v2
+        with:
+          token_format: "access_token"
+          workload_identity_provider: ${{ vars.DEV_GCP_GHA_WORKLOAD_IDP}}
+          service_account: ${{ vars.DEV_GCP_GHA_SERVICE_ACCOUNT}}
+      - name: Login to Google Artifact Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: oauth2accesstoken
+          password: ${{ steps.auth.outputs.access_token }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and Pushs
+        uses: docker/build-push-action@v5
+        env:
+          APP: locust
+        with:
+          file: ./Dockerfile
+          push: true
+          provenance: false
+          tags: ${{ env.REGISTRY }}/${{ env.APP }}:${{ env.TAG }}, ${{ env.REGISTRY }}/${{ env.APP }}:latest
+          platforms: linux/amd64
+          cache-from: type=gha
+          cache-to: type=gha,mode=max