Change by terraform in repo workflow config, Add .github/workflows/in…

…fracost.yaml

.github/workflows/infracost.yaml

@@ -0,0 +1,57 @@
+name: Infracost
+on:
+  pull_request:
+  push:
+    branches: [main, master]
+jobs:
+  terraform-validate:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+      contents: write
+      discussions: write
+      pull-requests: write
+      security-events: write
+      id-token: write
+    strategy:
+      matrix:
+        path:
+          - /
+
+    steps:
+      - name: Setup Infracost
+        uses: infracost/actions/setup@v2
+        with:
+           api-key: ${{secrets.INFRACOST_API_KEY}}
+
+      - name: Checkout base branch
+        uses: actions/checkout@v3
+        with:
+          ref: '${{ github.event.pull_request.base.ref }}'
+
+      - name: Generate Infracost cost estimate baseline
+        run: |
+          infracost breakdown --path=${{ matrix.path }} \
+                              --format=json \
+                              --out-file=/tmp/infracost-base.json
+        continue-on-error: true
+
+      - name: Checkout PR branch
+        uses: actions/checkout@v3
+
+      - name: Generate Infracost diff
+        run: |
+          infracost diff --path=${{ matrix.path }}\
+                          --format=json \
+                          --compare-to=/tmp/infracost-base.json \
+                          --out-file=/tmp/infracost.json
+        continue-on-error: true
+
+      - name: Post Infracost comment
+        run: |
+            infracost comment github --path=/tmp/infracost.json \
+                                     --repo=$GITHUB_REPOSITORY \
+                                     --github-token=${{github.token}} \
+                                     --pull-request=${{github.event.pull_request.number}} \
+                                     --behavior=update
+        continue-on-error: true