Troubleshoot a container instance

dwat.sh

#!/bin/bash

printhelp() {
cat <<EOF

	dwat CONTAINER [CMD ...]

EOF
}

container="$1"; shift

[[ -n "$container" ]] || {
	printhelp
	exit 1
}

image="$container-broken"

cmnd="${1:-/bin/bash}"; shift

set -x

docker commit "$container" "$image"
docker run -it --rm --entrypoint="$cmnd" "$image" "$@"
docker rmi "$image"