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docker inspect – format its output as a table – Nginx

How to use --format option of docker inspect to get its output as a table.
Following the documentation I used --format 'table ...' as an option with docker ps and it worked fine, but docker inspect seems to ignore it.

example:

echo "docker ps as table"
docker ps -a --format 'table {{.Names}}t{{.Image}}'

echo "docker inspect as table"
docker ps --quiet | xargs --no-run-if-empty docker inspect 
--format 'table {{.Name}}t{{.Config.Image}}'

produces the output:

docker ps as table
NAMES                     IMAGE
tmp-php-7.3-cli-buster    tmp-php:7.3-cli-buster
tmp-mysql-8.0.19-client   mysql:8
tmp-mysql-8.0.19          tmp-mysql:8.0.19
tmp-nginx-1.17.8          tmp-nginx:1.17.8
tmp-php-7.3-fpm-buster    tmp-php:7.3-fpm-buster
tmp-node-13.8.0-buster    tmp-node:13.8.0-buster
docker inspect as table
table /tmp-php-7.3-cli-busterttmp-php:7.3-cli-buster
table /tmp-mysql-8.0.19-clienttmysql:8
table /tmp-mysql-8.0.19ttmp-mysql:8.0.19
table /tmp-nginx-1.17.8ttmp-nginx:1.17.8
table /tmp-php-7.3-fpm-busterttmp-php:7.3-fpm-buster
table /tmp-node-13.8.0-busterttmp-node:13.8.0-buster
Tags:

2

Answers


  1. 0

    Looks like docker inspect currently can’t ouput tables, see this GitHub issue:

    I got here because I’ve tried to output table too, but unfortunately, all I can do is quote the comment from the issue:

    TLDR; docker inspect deals with JSON output and thus JSON output templates, versus the formatting strings you’d expect from other commands (such as docker stats)
    …
    Which is essentially why table isn’t working as expected and coming back as raw.

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  2. 0

    I managed to get a "table"-like output similar to docker stats. Mainly by utilizing the column command.

    For example with this command:

    docker inspect $(docker ps -q) --format "{{.Name}} {{.Config.User}}" | column -t -s ' '

    Or if you also want some fancy headings:

    (echo "NAME USER"; docker inspect $(docker ps -q) --format "{{.Name}} {{.Config.User}}") | column -t -s ' '
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