GIT sa mère

Proxy

Add proxy

git config --global  http.proxy myproxy

Remove proxy
git config --global --unset http.proxy

Credentials 

reset
git config --global credentials.helper

Gradle behind a corporate proxy

You can pass some arguments to gradle
-Dhttp.proxyUser=addomain\\myuser -Dhttp.proxyPassword=mypassword -Dhttps.proxyUser=addomain\\myuser -Dhttps.proxyPassword=mypassword -Dhttp.proxyHost=myproxy -Dhttp.proxyPort=80 -Dhttps.proxyHost=myproxy -Dhttps.proxyPort=80