setup-docker-remote.sh

# usage: curl -sL bit.ly/mlgrm-docker-remote | tail -n +3 >> $HOME/.bashrc && . $HOME/.bashrc

# --------- begin mlgrm docker_host function -------- #
# set environment variables to execute docker commands using gcp compute engine HOST
# leave out host to unset the variables
# usage docker_host HOST
docker_host () {
    if [[ -n $1 ]]; then
        export DOCKER_HOST="tcp://$(gcloud compute instances describe $1 \
            --format 'value(networkInterfaces[0].accessConfigs[0].natIP)'):2376" DOCKER_TLS_VERIFY=1
        if ! [[ -d $HOME/.docker && $(ls $HOME/.docker/{ca,cert,key}.pem | wc -l) -eq 3 ]]; then
            >&2 echo "need to get the pem files and put them in ~/.docker.  (maybe saved in drive as $1-tls.tgz?)"
        fi
    else
        unset DOCKER_HOST DOCKER_TLS_VERIFY
    fi
}
remove_docker_host () {
    begin='# --------- begin mlgrm docker_host function -------- #'
    end='# ---------- end mlgrm docker_host function ----------#'
    sed "/^$begin$/,/^$end$/d" -i $HOME/.bashrc
}
# ---------- end mlgrm docker_host function ----------#