something to using docker

set proxy

It’s annoying that you can’t download third-party libraries from github because of network when using linux os docker image to develop. So using proxy in docker is necessary.

This is the official website to use proxy in docker

Below is one of the ways if you have root’ permission

sudo mkdir -p /etc/systemd/system/docker.service.d
sudo touch /etc/systemd/system/docker.service.d/proxy.conf

add the below content to proxy.conf

sudo touch /etc/systemd/system/docker.service.d/proxy.conf

then restart docker

sudo systemctl daemon-reload
sudo systemctl restart docker

notice: This is not to say that docker container will connect to the port in your physics machine. You still need to install your vpn client in each of your containers.

install libraries

It’s common to find that a linux os container lacks of libraries when linking because linux docker image is minimal. So how to install libraries when getting an error like cannot find -lcrc32c if you don’t know the library’s name? In ubuntu, you can install libcrc*.l means lib and you can use tab to autocompletion the library’s name, and then you can find the library you need is called libcrcutil-dev.