更新构建配置并补充测试

Dockerfile

@@ -1,11 +1,11 @@
-FROM golang:1.25-alpine AS builder
+FROM golang:1.26-alpine AS builder
 
 ARG TARGETARCH
 ARG VERSION=dev
 
 WORKDIR /app
 COPY src/go.mod src/go.sum ./
-RUN go mod download && apk add upx
+RUN apk add --no-cache upx && go mod download
 
 COPY src/ .
 
@@ -13,7 +13,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -ldflags="-s -w -X ma
 
 FROM alpine
 
-WORKDIR /root/
+WORKDIR /app
 
 COPY --from=builder /app/hubproxy .
 COPY --from=builder /app/config.toml .