Update Dockerfile

Dockerfile

@@ -6,7 +6,7 @@ COPY --from=certs /etc/ssl/certs /etc/ssl/certs
 COPY vocechat-server /home/vocechat-server/vocechat-server
 COPY config /home/vocechat-server/config
 COPY docker-entrypoint.sh /
-RUN mkdir /home/vocechat-server/data &&chmod +x /docker-entrypoint.sh && chmod +x /home/vocechat-server/vocechat-server
+RUN mkdir /home/vocechat-server/data &&chmod u+x /docker-entrypoint.sh && chmod u+x /home/vocechat-server/vocechat-server
 ENV VOCECHAT_FCM_PROJECT_ID=""\
     VOCECHAT_FCM_PRIVATE_KEY=""\
     VOCECHAT_FCM_CLIENT_EMAIL=""\