Script to add your github ssh key to any github requests. Great for concourse tasks with private golang modules.

add-github-ssh-key.sh

#!/usr/bin/env bash

if [[ -z "${GITHUB_KEY}" ]] ; then
    echo "GITHUB_KEY not defined"
    exit 1
fi

mkdir -p $HOME/.ssh
chmod 700 $HOME/.ssh
echo "${GITHUB_KEY}" > $HOME/.ssh/id_github
echo "Host github.com" >> $HOME/.ssh/config
echo "   HostName github.com" >> $HOME/.ssh/config
echo "   User git" >> $HOME/.ssh/config
echo "   IdentityFile ~/.ssh/id_github" >> $HOME/.ssh/config
echo "   StrictHostKeyChecking no" >> $HOME/.ssh/config

chmod 600 $HOME/.ssh/*

git config --global url."git@github.com:".insteadOf "https://github.com/"