diff --git a/deploy/Dockerfile.api b/deploy/Dockerfile.api
index b144a31..5580f77 100644
--- a/deploy/Dockerfile.api
+++ b/deploy/Dockerfile.api
@@ -9,7 +9,10 @@ RUN go mod download
 COPY backend/ ./
 ARG VERSION=dev
 ARG COMMIT=unknown
-RUN CGO_ENABLED=0 GOOS=linux go build \
+# -tags nodynamic：gen2brain/webp 默认经 purego dlopen libwebp.so，会把二进制动态链接到
+# glibc（INTERP /lib64/ld-linux），Alpine 无法 exec（0.2.1 首版事故）。该标签强制走
+# wasm2go 转译的纯 Go 实现，保持 CGO_ENABLED=0 全静态。
+RUN CGO_ENABLED=0 GOOS=linux go build -tags nodynamic \
     -trimpath \
     -ldflags="-s -w -X github.com/freefire/jiang13-bbs/version.Version=${VERSION} -X github.com/freefire/jiang13-bbs/version.Commit=${COMMIT}" \
     -o /out/jiang13 ./cmd/jiang13