feat(release): 添加参数支持单独构建前后端镜像

支持通过参数指定构建目标（backend/frontend/all）和自定义 tag

release.sh

@@ -3,18 +3,43 @@
 set -e
 
 # === 配置 ===
-USER=fewinter               # 你的 Docker Hub 用户名
+USER=fewinter
 BACKEND_DIR=./backend
 FRONTEND_DIR=./frontend
 BACKEND_IMAGE=$USER/fastapi-backend
 FRONTEND_IMAGE=$USER/fastapi-frontend
-TAG=${1:-latest}           # 默认 tag 是 latest，传参可覆盖
+
+# === 解析参数 ===
+TAG=latest
+TARGET=all
+
+if [[ $# -eq 1 ]]; then
+    if [[ "$1" == "all" || "$1" == "backend" || "$1" == "frontend" ]]; then
+        TARGET="$1"
+    else
+        TAG="$1"
+    fi
+elif [[ $# -eq 2 ]]; then
+    TAG="$1"
+    TARGET="$2"
+fi
+
+# === 检查目标 ===
+if [[ "$TARGET" != "backend" && "$TARGET" != "frontend" && "$TARGET" != "all" ]]; then
+    echo "❌ 无效的目标: $TARGET"
+    echo "用法: $0 [tag] [backend|frontend|all]"
+    exit 1
+fi
 
 # === 构建并推送 ===
-echo "▶ Building and pushing backend..."
-docker buildx build --platform linux/amd64 -t $BACKEND_IMAGE:$TAG $BACKEND_DIR --push
+if [[ "$TARGET" == "backend" || "$TARGET" == "all" ]]; then
+    echo "▶ Building and pushing backend..."
+    docker buildx build --platform linux/amd64 -t $BACKEND_IMAGE:$TAG $BACKEND_DIR --push
+fi
 
-echo "▶ Building and pushing frontend..."
-docker buildx build --platform linux/amd64 -t $FRONTEND_IMAGE:$TAG $FRONTEND_DIR --push
+if [[ "$TARGET" == "frontend" || "$TARGET" == "all" ]]; then
+    echo "▶ Building and pushing frontend..."
+    docker buildx build --platform linux/amd64 -t $FRONTEND_IMAGE:$TAG $FRONTEND_DIR --push
+fi
 
-echo "✅ Release completed: $TAG"
+echo "✅ Release completed: tag=$TAG target=$TARGET"