Add backstage file

.github/workflows/backstage_techdocs.yaml

@@ -0,0 +1,44 @@
+name: Publish TechDocs Site
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "docs/**"
+      - "mkdocs.yml"
+  workflow_dispatch:
+
+
+jobs:
+  publish-techdocs-site:
+    runs-on: ubuntu-latest
+
+    env:
+      TECHDOCS_S3_BUCKET_NAME: 'monta-tech-docs'
+      AWS_ACCESS_KEY_ID: ${{ secrets.TECHDOCS_AWS_ACCESS_KEY_ID }}
+      AWS_SECRET_ACCESS_KEY: ${{ secrets.TECHDOCS_AWS_SECRET_ACCESS_KEY }}
+      AWS_REGION: 'eu-west-1'
+      ENTITY_NAMESPACE: 'default'
+      ENTITY_KIND: 'Component'
+      ENTITY_NAME: 'backstage'
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - uses: actions/setup-node@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+
+      - name: Install techdocs-cli
+        run: sudo npm install -g @techdocs/cli
+
+      - name: Install mkdocs and mkdocs plugins
+        run: python -m pip install mkdocs-techdocs-core==1.*
+
+      - name: Generate docs site
+        run: techdocs-cli generate --no-docker --verbose
+
+      - name: Publish docs site
+        run: techdocs-cli publish --publisher-type awsS3 --storage-name $TECHDOCS_S3_BUCKET_NAME --entity $ENTITY_NAMESPACE/$ENTITY_KIND/$ENTITY_NAME