SSH from GitLab CI runner

ssh_from_gitlab_ci_runner.bash

#!/usr/bin/env bash


### Source:
###     https://gist.github.com/yannhowe/5ab1501156bd84c8ac261e2c17b8e3e0#gistcomment-2564991


mkdir -p ~/.ssh
# https://docs.gitlab.com/ee/ci/ssh_keys/#how-it-works
echo "${CI_RUNNER_SSH_PRIVATE_KEY}" | tr -d '\r' > ~/.ssh/id_rsa
chmod 700 ~/.ssh/id_rsa
eval "$(ssh-agent -s)"
ssh-add ~/.ssh/id_rsa
# https://docs.gitlab.com/ee/ci/ssh_keys/#verifying-the-ssh-host-keys
ssh-keyscan -H 'gitlab.com' >> ~/.ssh/known_hosts