fix(tiup-publisher): fix dockerfile

Signed-off-by: wuhuizuo <wuhuizuo@126.com>

tiup-publisher/Dockerfile

@@ -1,13 +1,13 @@
 FROM golang:1.23.1-alpine AS builder
 
 COPY . /app
-RUN --mount=type=cache,target=/go/pkg/mod cd /app && go build -o server ./cmd/server
+RUN --mount=type=cache,target=/go/pkg/mod cd /app && go build -o tiup-publisher .
 
 # final image
 # there are oras and tiup tools in the image.
 FROM ghcr.io/pingcap-qe/cd/utils/release:v20240901-17-g6749b2e
 LABEL org.opencontainers.image.licenses="MIT"
 LABEL org.opencontainers.image.source="https://github.com/PingCAP-QE/ee-apps"
 
-COPY --from=builder --chown=root:root /app/server /app/server
-ENTRYPOINT [ "/app/server" ]
+COPY --from=builder --chown=root:root /app/tiup-publisher /app/tiup-publisher
+ENTRYPOINT [ "/app/tiup-publisher" ]