feat(ci): add GitHub Actions workflow for building and pushing PCCS

.github/workflows/pccs.yml

@@ -0,0 +1,32 @@
+name: Build PCCS Docker Image
+
+on:
+  workflow_dispatch:
+  push:
+    branches: 
+      - 'release/**'
+      - 'pre-release/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    name: Build PCCS Docker Image
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to GAR
+        uses: docker/login-action@v2
+        with:
+          registry: us-docker.pkg.dev
+          username: _json_key
+          password: ${{ secrets.GCR_JSON_KEY }}
+
+      - name: Build and push pccs docker
+        run: |
+          cd docker
+          docker compose build pccs --no-cache
+          ./push_image.sh ${{ github.ref_name }}
+        shell: bash