add branches workflow

Author: Tom McLaughlin

.github/workflows/branch.yaml

@@ -0,0 +1,98 @@
+name: Branches
+
+on:
+  workflow_dispatch:
+  push:
+    branches-ignore:
+      - 'main'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - name: Setup job workspace
+        uses: ServerlessOpsIO/gha-setup-workspace@v1
+
+      - name: Assume AWS Credentials
+        uses: ServerlessOpsIO/gha-assume-aws-credentials@v1
+        with:
+          build_aws_account_id: ${{ secrets.AWS_CICD_ACCOUNT_ID }}
+
+      - name: Install AWS SAM
+        uses: aws-actions/setup-sam@v2
+
+      - name: Validate artifact (deploy)
+        run: sam validate --lint -t stackset-deploy-template.yaml
+
+      - name: Validate artifact (build)
+        run: sam validate --lint -t stackset-build-template.yaml
+
+      - name: Validate artifact (SAM artifact)
+        run: sam validate --lint -t stacksets/gha-build/sam-deployment.yaml
+
+      - name: Validate artifact (build stackset)
+        run: sam validate --lint -t stacksets/gha-build/stackset.yaml
+
+      - name: Validate artifact (deploy stackset)
+        run: sam validate --lint -t stacksets/gha-deploy/stackset.yaml
+
+      - name: Synethsize StackSet templates
+        run: |
+          for _f in $(find . -type f -name 'stackset-*-template.yaml'); do
+            _dir="$(dirname $_f)/" \
+            yq \
+              -i \
+              '(.. | select(has("localTemplateFile")) | .localTemplateFile) |= load_str(strenv(_dir) + .)' \
+              $_f;
+          done
+
+      - name: Upload SAM artifact (Management Account / GHA Deploy)
+        id: upload-sam-gha-template
+        shell: bash
+        run: |
+          sam package \
+            --template stacksets/gha-deploy/stackset.yaml \
+            --s3-bucket aws-sam-cli-sourcebucket-225989329251-us-east-1  \
+            --s3-prefix ${{ env.GITHUB_REPOSITORY_OWNER_PART_SLUG_URL }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG_URL }}/${{ env.GITHUB_REF_SLUG_URL }} \
+            --region us-east-1 \
+            --output-template-file packaged-gha-deploy-template.yaml
+
+      - name: Upload SAM artifact (Management Account / CFN CR)
+        id: upload-sam-cfncr-template
+        shell: bash
+        run: |
+          sam package \
+            --template stacksets/cfn-custom-resource-deploy/stackset.yaml \
+            --s3-bucket aws-sam-cli-sourcebucket-225989329251-us-east-1  \
+            --s3-prefix ${{ env.GITHUB_REPOSITORY_OWNER_PART_SLUG_URL }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG_URL }}/${{ env.GITHUB_REF_SLUG_URL }} \
+            --region us-east-1 \
+            --output-template-file packaged-cfncr-template.yaml
+
+      - name: Upload SAM artifact (Build Account)
+        id: upload-sam-stackset-build-template
+        shell: bash
+        run: |
+          sam package \
+            --template stackset-build-template.yaml \
+            --s3-bucket aws-sam-cli-sourcebucket-225989329251-us-east-1  \
+            --s3-prefix ${{ env.GITHUB_REPOSITORY_OWNER_PART_SLUG_URL }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG_URL }}/${{ env.GITHUB_REF_SLUG_URL }} \
+            --region us-east-1 \
+            --output-template-file packaged-stackset-build-template.yaml
+
+      - name: Upload SAM artifact (Deploy Account)
+        id: upload-sam-stackset-deploy-template
+        shell: bash
+        run: |
+          sam package \
+            --template stackset-deploy-template.yaml \
+            --s3-bucket aws-sam-cli-sourcebucket-225989329251-us-east-1  \
+            --s3-prefix ${{ env.GITHUB_REPOSITORY_OWNER_PART_SLUG_URL }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG_URL }}/${{ env.GITHUB_REF_SLUG_URL }} \
+            --region us-east-1 \
+            --output-template-file packaged-stackset-deploy-template.yaml
+
+      - name: Store Artifacts
+        uses: ServerlessOpsIO/gha-store-artifacts@v1