docker_inspect.sh

# Bash shell function that runs "docker inspect" and pipes the output through jq.
# Requires jq [https://stedolan.github.io/jq/]
#
# Usage: di CONTAINER|IMAGE

di() (
    error=1
    __obj=$1
    if [[ ! ${__obj} ]]; then
        echo "${FUNCNAME}(): error: missing docker object argument" >&2
        return ${error}
    elif ! which jq &>/dev/null; then
        echo "${FUNCNAME}(): error: missing required program \"jq\"" >&2
        return ${error}
    fi
    __tmp=$(mktemp inspect.tmp.XXXXXXXX)
    if (($?)); then
        echo "${FUNCNAME}(): error: could not create tmp file" >&2
        return ${error}
    elif ! [[ ${__tmp} && -r ${__tmp} && -w ${__tmp} ]]; then
        echo "${FUNCNAME}(): error: tmp file ${__tmp} is not read-write" >&2
        return ${error}
    fi
    trap "[[ -f ${__tmp} ]] && rm -f ${__tmp}" EXIT RETURN
    docker inspect "${__obj}" \
        | jq -C '.' \
        | tee "${__tmp}" \
        | less -R
    cat ${__tmp} 2>/dev/null
)