更新 Dockerfile

@@ -24,4 +24,5 @@ RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 WORKDIR /root/
 COPY --from=builder /go/src/opp .
 EXPOSE 8080
+EXPOSE 443
 CMD ["./opp"]
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