feat: 优化构建流程，使用预编译二进制文件

Dockerfile

@@ -1,21 +1,13 @@
-FROM golang:1.25-alpine AS builder
-
-ARG TARGETARCH
-
-WORKDIR /app
-COPY src/go.mod src/go.sum ./
-RUN go mod download && apk add upx
-
-COPY src/ .
-
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -ldflags="-s -w" -trimpath -o hubproxy . \
-    && upx -9 hubproxy
-
 FROM alpine
 
 WORKDIR /root/
 
-COPY --from=builder /app/hubproxy .
-COPY --from=builder /app/config.toml .
+ENV BINARY_NAME=hubproxy
+
+ARG TARGETOS
+ARG TARGETARCH
+
+COPY src/config.toml .
+COPY build/hubproxy/${BINARY_NAME}-${TARGETOS}-${TARGETARCH} ${BINARY_NAME}
 
 CMD ["./hubproxy"]