Docker images -a. Надо ли удалять это?

Question

[Николай Савельев]

Команда
docker images -a
выдаёт это

Нужно ли это удалять, чтобы освободить место? Если да, то как удалить правильно, чтобы не повредить основные образы?

Comments

[сергей кузьмин]

docker container prune -f
docker image prune -f

если помогло - я положу в ответы вы отметите решением

[Николай Савельев]

сергей кузьмин,
docker: 'container' is not a docker command. See 'docker --help'.
docker: 'image' is not a docker command. See 'docker --help'.

[Slesair]

Николай Савельев,
docker image prune

https://habr.com/ru/company/flant/blog/336654/

[Николай Савельев]

Slesair,

docker: 'image' is not a docker command. See 'docker --help'.

[shurshur]

Николай Савельев, вообще в моей версии докера docker system prune.

Но лучше сначала подумать, а потом выполнять команды из интернета. Вдруг будет сделано что-то не то, что задумывалось?

Эта команда удаляет контейнеры, образа и тома, которые сейчас не используются. Если образ не используется вот прямо сейчас, но сам по себе нужен (и его нельзя скачать из удалённого registry), то делать такую очистку опасно.

Что касается этих none-образов, то это обычно хвосты от всяких сборок и промежуточные образы для кэширования сборочных слоёв. Их можно удалять спокойно. Тем более что им 15 месяцев уже.

docker rmi $(docker images -a|grep '<none>'|awk '{ print $3 }')

[сергей кузьмин]

Николай Савельев
чего ??

docker container help

Usage:  docker container COMMAND

Manage containers

Commands:
  attach      Attach local standard input, output, and error streams to a running container
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  diff        Inspect changes to files or directories on a container's filesystem
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  inspect     Display detailed information on one or more containers
  kill        Kill one or more running containers
  logs        Fetch the logs of a container
  ls          List containers
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  prune       Remove all stopped containers
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  run         Run a command in a new container
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  wait        Block until one or more containers stop, then print their exit codes

docker image help

Usage:  docker image COMMAND

Manage images

Commands:
  build       Build an image from a Dockerfile
  history     Show the history of an image
  import      Import the contents from a tarball to create a filesystem image
  inspect     Display detailed information on one or more images
  load        Load an image from a tar archive or STDIN
  ls          List images
  prune       Remove unused images
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rm          Remove one or more images
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE

docker  version
Client: Docker Engine - Community
 Version:           20.10.5
 API version:       1.40
 Go version:        go1.13.15
 Git commit:        55c4c88
 Built:             Tue Mar  2 20:18:05 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

[Николай Савельев]

сергей кузьмин,

root@117456:~# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
golang              latest              cc2241365bf8        2 days ago          777.3 MB
postgres            latest              aaf3833e2696        14 months ago       374 MB
bitnami/mongodb     latest              89f67ed37a80        14 months ago       430 MB
rabbitmq            latest              82455b8004da        14 months ago       219.9 MB
redis               latest              b888d3762e2c        15 months ago       112.7 MB
nginx               latest              47819307ccb5        15 months ago       141.5 MB
mysql               latest              8375b093df08        15 months ago       515.6 MB
node                latest              5e4d3bf8ad78        15 months ago       991.6 MB
hello-world         latest              a1f125167a7f        16 months ago       13.26 kB

root@117456:~# docker container help
docker: 'container' is not a docker command. See 'docker --help'.

root@117456:~# docker version
Client version: 1.6.2
Client API version: 1.18
Go version (client): go1.2.1
Git commit (client): 7c8fca2
OS/Arch (client): linux/amd64
Server version: 1.6.2
Server API version: 1.18
Go version (server): go1.2.1
Git commit (server): 7c8fca2
OS/Arch (server): linux/amd64

root@117456:~# docker image help
docker: 'image' is not a docker command. See 'docker --help'.

root@117456:~# docker container help
docker: 'container' is not a docker command. See 'docker --help'.

какой-то у меня обрезанный докер что ли

root@117456:~# docker help
Usage: docker [OPTIONS] COMMAND [arg...]

A self-sufficient runtime for linux containers.

Options:
  --api-cors-header=                   Set CORS headers in the remote API
  -b, --bridge=                        Attach containers to a network bridge
  --bip=                               Specify network bridge IP
  -D, --debug=false                    Enable debug mode
  -d, --daemon=false                   Enable daemon mode
  --default-ulimit=[]                  Set default ulimits for containers
  --dns=[]                             DNS server to use
  --dns-search=[]                      DNS search domains to use
  -e, --exec-driver=native             Exec driver to use
  --fixed-cidr=                        IPv4 subnet for fixed IPs
  --fixed-cidr-v6=                     IPv6 subnet for fixed IPs
  -G, --group=docker                   Group for the unix socket
  -g, --graph=/var/lib/docker          Root of the Docker runtime
  -H, --host=[]                        Daemon socket(s) to connect to
  -h, --help=false                     Print usage
  --icc=true                           Enable inter-container communication
  --insecure-registry=[]               Enable insecure registry communication
  --ip=0.0.0.0                         Default IP when binding container ports
  --ip-forward=true                    Enable net.ipv4.ip_forward
  --ip-masq=true                       Enable IP masquerading
  --iptables=true                      Enable addition of iptables rules
  --ipv6=false                         Enable IPv6 networking
  -l, --log-level=info                 Set the logging level
  --label=[]                           Set key=value labels to the daemon
  --log-driver=json-file               Containers logging driver
  --mtu=0                              Set the containers network MTU
  -p, --pidfile=/var/run/docker.pid    Path to use for daemon PID file
  --registry-mirror=[]                 Preferred Docker registry mirror
  -s, --storage-driver=                Storage driver to use
  --selinux-enabled=false              Enable selinux support
  --storage-opt=[]                     Set storage driver options
  --tls=false                          Use TLS; implied by --tlsverify
  --tlscacert=~/.docker/ca.pem         Trust certs signed only by this CA
  --tlscert=~/.docker/cert.pem         Path to TLS certificate file
  --tlskey=~/.docker/key.pem           Path to TLS key file
  --tlsverify=false                    Use TLS and verify the remote
  -v, --version=false                  Print version information and quit

Commands:
    attach    Attach to a running container
    build     Build an image from a Dockerfile
    commit    Create a new image from a container's changes
    cp        Copy files/folders from a container's filesystem to the host path
    create    Create a new container
    diff      Inspect changes on a container's filesystem
    events    Get real time events from the server
    exec      Run a command in a running container
    export    Stream the contents of a container as a tar archive
    history   Show the history of an image
    images    List images
    import    Create a new filesystem image from the contents of a tarball
    info      Display system-wide information
    inspect   Return low-level information on a container or image
    kill      Kill a running container
    load      Load an image from a tar archive
    login     Register or log in to a Docker registry server
    logout    Log out from a Docker registry server
    logs      Fetch the logs of a container
    port      Lookup the public-facing port that is NAT-ed to PRIVATE_PORT
    pause     Pause all processes within a container
    ps        List containers
    pull      Pull an image or a repository from a Docker registry server
    push      Push an image or a repository to a Docker registry server
    rename    Rename an existing container
    restart   Restart a running container
    rm        Remove one or more containers
    rmi       Remove one or more images
    run       Run a command in a new container
    save      Save an image to a tar archive
    search    Search for an image on the Docker Hub
    start     Start a stopped container
    stats     Display a stream of a containers' resource usage statistics
    stop      Stop a running container
    tag       Tag an image into a repository
    top       Lookup the running processes of a container
    unpause   Unpause a paused container
    version   Show the Docker version information
    wait      Block until a container stops, then print its exit code

Run 'docker COMMAND --help' for more information on a command.

[сергей кузьмин]

какой-то обрезанный докер
Холмс, но как? Как вы догадались

Answer 1

[IgorOhrimenko]

Так можно безопасно очистить:

docker image prune
WARNING! This will remove all dangling images.
Are you sure you want to continue? [y/N]

При этом будут удалены все и далеко не факт, что освободится место, т.к. наверняка вместо есть точно такие же образы, но с имеем.
Для освобождения места можно воспользоваться командой `docker system prune --volumes`.