change caddy version

Dockerfile

@@ -7,6 +7,6 @@ RUN npm run build
 FROM gcr.io/distroless/base-debian12
 COPY Caddyfile /etc/caddy/Caddyfile
 COPY --from=builder /app/dist /srv
-COPY --from=caddy:2.9-builder /usr/bin/caddy /usr/bin/caddy
+COPY --from=caddy:2.9 /usr/bin/caddy /usr/bin/caddy
 EXPOSE 7860
 ENTRYPOINT ["/usr/bin/caddy", "run", "--config", "/etc/caddy/Caddyfile"]