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

.bashrc

# 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/

function format_run() {
    cid=$1

    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 $json | jq -r .[0].Image                                       )
    cmd=$(         echo $json | jq -r '.[0].Config.Cmd | join(" ")'                    )

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