[PROMOTE] 晉升 demo 至 main

1. [FEAT] 調整部署工作流以保留 Docker 建置快取
2. [FEAT] 調整生產環境部署流程的容器健康檢查等待邏輯與清理策略

.gitea/workflows/deploy-demo.yaml

@@ -80,4 +80,4 @@ jobs:
           docker restart star-cloud-mqtt-worker
 
       - name: Step 5 - Cleanup
-        run: docker image prune -f
+        run: docker image prune -f --filter "until=168h"

.gitea/workflows/deploy-prod.yaml

@@ -33,7 +33,28 @@ jobs:
 
       - name: Step 1 - Build & Deploy Containers
         run: |
-          WWWGROUP=1001 WWWUSER=1001 docker-compose up -d --build --wait
+          WWWGROUP=1001 WWWUSER=1001 docker-compose up -d --build
+
+          for container in star-cloud-mysql star-cloud-redis star-cloud-emqx; do
+            echo ">>> Waiting for ${container} to become healthy..."
+
+            for i in $(seq 1 60); do
+              status=$(docker inspect -f '{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}' "${container}" 2>/dev/null || echo "missing")
+
+              if [ "${status}" = "healthy" ]; then
+                echo ">>> ${container} is healthy."
+                break
+              fi
+
+              if [ "${i}" -eq 60 ]; then
+                echo ">>> ${container} did not become healthy. Current status: ${status}"
+                docker logs --tail 80 "${container}" || true
+                exit 1
+              fi
+
+              sleep 2
+            done
+          done
 
       - name: Step 2 - Deploy Code
         run: |
@@ -75,4 +96,4 @@ jobs:
           echo "✅ MQTT Worker 已重啟"
 
       - name: Step 5 - Cleanup
-        run: docker image prune -f
+        run: docker image prune -f --filter "until=168h"