阿里云上编译好困难，好多库都无法下载，缺爹少妈

我想请问阿里云的同学们，你们是单机版的局域网云吗？还是说国内大环境就是这样？想开发必须在本地翻墙下载好再传上云？在阿里云直接用$$翻墙会被你们抓吗？阿里云会扫描用户翻墙应用吗？谢谢。

[ 7%] Performing download step (git clone) for 'EP_bcg729'
Cloning into 'EP_bcg729'...
error: RPC failed; curl 56 GnuTLS recv error (-54): Error in the pull function.
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
Cloning into 'EP_bcg729'...


[ 7%] Performing download step (git clone) for 'EP_bcg729'
Cloning into 'EP_bcg729'...
fatal: unable to access 'https://gitlab.linphone.org/BC/public/bcg729.git/': Failed to connect to gitlab.linphone.org port 443: Connection timed out
Cloning into 'EP_bcg729'...
fatal: unable to access 'https://gitlab.linphone.org/BC/public/bcg729.git/': Failed to connect to gitlab.linphone.org port 443: Connection timed out
Cloning into 'EP_bcg729'...
fatal: unable to access 'https://gitlab.linphone.org/BC/public/bcg729.git/': Failed to connect to gitlab.linphone.org port 443: Connection timed out
-- Had to git clone more than once:
3 times.
CMake Error at /root/GitProjects/Flexisip/WORK/flexisip/tmp/EP_bcg729/EP_bcg729-gitclone.cmake:40 (message):
Failed to clone repository:
'https://gitlab.linphone.org/BC/public/bcg729.git'


apt-get install kcptun
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package kcptun