fix: add workflow terraform-deploy job to set up terraform

Author: larsb-dev

.github/workflows/build.yml

@@ -24,13 +24,24 @@ jobs:
             --image mercury:${{ github.ref_name }} \
             --file Dockerfile .
 
+  terraform-deploy:
+    runs-on: ubuntu-latest
+    env:
+      ARM_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
+      ARM_CLIENT_SECRET: ${{ secrets.AZURE_CLIENT_SECRET }}
+      ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+      ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
+    needs: build-and-push
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@v3
+
       - name: Terraform Apply
         run: |
           terraform init
           terraform apply -auto-approve -var="image_tag=${{ github.ref_name }}"
         working-directory: ./terraform
-        env:
-          ARM_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
-          ARM_CLIENT_SECRET: ${{ secrets.AZURE_CLIENT_SECRET }}
-          ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
-          ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}