update Dockerfile.

Signed-off-by: PandaX <18610165312@163.com>

Dockerfile

@@ -1,11 +1,23 @@
+
+FROM golang:1.23.0-alpine AS builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN go env -w GOPROXY=https://goproxy.cn,direct && go mod download
+
+RUN go build -o pandax
+
+
 FROM alpine:latest
 LABEL MAINTAINER="PandaX"
 
-WORKDIR /go/src/panda
-COPY ./pandax ./
-COPY ./config.yml ./
-COPY ./resource ./resource
-COPY ./uploads ./uploads
+WORKDIR /pandax
+COPY --from=builder /app/pandax ./
+COPY --from=builder /app/config.yml ./
+COPY --from=builder /app/resource ./resource
+COPY --from=builder /app/uploads ./uploads
 
 RUN chmod 755 ./pandax