add action for building sidecar dockerfile.

.github/workflows/build-secretsmanagement-sidecar-rc.yml

@@ -0,0 +1,38 @@
+name: Build SecretsManagement-Sidecar Dockerimage
+run-name: Build SecretsManagement-Sidecar Dockerimage
+on: 
+  push:
+    branches:
+    - odaa-*
+    paths:
+    - source/operators/secretsmanagementOperator-hc/sidecar/docker/**/*
+jobs:
+  build-secretsmanagement-Sidecar-dockerfile-job:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Get Git commit timestamps
+        run: echo "TIMESTAMP=$(git log -1 --pretty=%ct)" >> $GITHUB_ENV
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: source/operators/secretsmanagementOperator-hc/sidecar/docker
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ocfork/secretsmanagement-sidecar:latest
+            ocfork/secretsmanagement-sidecar:0.1.0-rc
+        env:
+          SOURCE_DATE_EPOCH: ${{ env.TIMESTAMP }}

source/operators/secretsmanagementOperator-hc/sidecar/docker/trigger-docker-build.txt

@@ -0,0 +1 @@
+this file should only trigger the docker build.