Convert an existing docker container into a "docker run" command line

docker-rerun.sh

# Convert an existing docker container into a "docker run" command line.
# 
# This is useful when trying to debug containers that have been created
# by orchestration tools.
#
# Install jq: stedolan.github.io/jq/

jq="docker run --rm -i imega/jq:1.0.0"

function format_run() {
    cid=$1
    name=$2

    json=$(docker inspect $cid 2>&1)

    # parse container info
    entrypoint=$(  echo $json | $jq -r '.[0].Config.Entrypoint | join(" ")'             )
    envvars=$(     echo $json | $jq -r '(.[0].Config.Env | [" -e " + .[]] | join(""))'  )
    image=$(       echo $json | $jq -r .[0].Image                                       )
    volume=$(      echo $json | $jq -r '.[0].HostConfig.Binds | "-v " + .[0]'           )
    cmd=$(         echo $json | $jq -r '.[0].Config.Cmd | join(" ")'                    )

    echo "docker run --name $name --entrypoint $entrypoint $volume $envvars $image $cmd"
}