Add workflow file

.github/workflows/workflow.yaml

@@ -0,0 +1,41 @@
+name: Terraform Deployment
+
+on:
+  push:
+    branches: [ "main" ]
+
+env:            
+  AWS_REGION: ap-southeast-1  
+
+jobs:
+  CICD:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Configure AWS credentials
+      uses: aws-actions/configure-aws-credentials@v1
+      with:
+        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+        aws-region: ${{ env.AWS_REGION }}
+
+    - name: Setup Terraform
+      uses: hashicorp/setup-terraform@v2
+
+    - name: Terraform fmt
+      run: terraform fmt --recursive
+
+    - name: Terraform Init
+      run: terraform init
+
+    - name: Terraform Validate
+      run: terraform validate 
+
+    - name: Terraform Plan
+      run: terraform plan
+
+    - name: Terraform Apply
+      run: terraform apply --auto-approve