Managing images
Figure 1091. Search images 
> docker search nextcloud NAME DESCRIPTION STARS OFFICIAL AUTOMATED nextcloud A safe home … 424 [OK] linuxserver/nextcloud A Nextcloud … 56 greyltc/nextcloud Nextcloud: … 34 [OK] wonderfall/nextcloud All-in-one … 27 [OK] rootlogin/nextcloud Nextcloud … 17 [OK] lsioarmhf/nextcloud ARMHF based … 8 ownyourbits/nextcloudpi NextCloud ARM … 7 ...
Figure 1092. Pull image using CLI
> docker image pull alpine Using default tag: latest latest: Pulling from library/alpine ff3a5c916c92: Pull complete Digest: sha256:7df6db5aa61ae9480f52f0b3a06a140ab98d427f86d8d5de0bedab9b8df6b1c0 Status: Downloaded newer image for alpine:latest
Figure 1093. Pull Nextcloud image
> docker image pull wonderfall/nextcloud ❶ Using default tag: latest ❷ latest: Pulling from wonderfall/nextcloud ff3a5c916c92: Already exists ❸ a542d4c3cffb: Pull complete ❹ 83001cc0bea0: Pull complete 41a33c66b2c1: Pull complete a70bf67726f3: Pull complete fea90b3d29ac: Pull complete Digest: sha256:472c5c7...2ca20cca45 ❺ Status: Downloaded newer image for wonderfall/nextcloud:latest
|
Get docker image from remote server. |
|
|
Version defaults to «latest»: Subject to be overridden. |
|
|
Reference to existing «alpine» layer. |
|
|
Layer downloads. |
|
|
Hash value allowing for image verification. |
Figure 1095. Inspect
image
> docker image inspect dac77467ddcc
[
{
"Id": "sha256:dac77467ddccc2287d99558245bd34707...",
"RepoTags": [
"nextcloud:13.0.4"
],
"RepoDigests": [
"nextcloud@sha256:fb3e77f19b21364925e8f02..."
],
...Figure 1096. Search
an image's tags
> curl 'https://registry.hub.docker.com/v2/repositories/library/nextcloud/tags/'|\ jq '."results"[]["name"]' # requires «aptitude install curl jq» % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 11856 0 11856 0 0 11856 0 --:--:-- --:--:-- --:--:-- 20371 "fpm" "production" "stable" "latest" "13" "13.0" "13.0.2" "production-apache" "stable-apache" "apache"
Figure 1097. Nextcloud image by version
> docker image pull nextcloud:13.0.4 13.0.4: Pulling from library/nextcloud 3d77ce4481b1: Pull complete 32bfdb6043a8: Pull complete 028453741593: Pull complete f93d7bd342a3: Pull complete 4a2fac611953: Pull complete 87fdfc7d0f94: Pull complete Digest: sha256:fb3e77f19b21364925e8f02d6e5ad3a1 ... Status: Downloaded newer image for nextcloud:13.0.4
Figure 1098. List images by CLI
> docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE nextcloud 13.0.4 dac77467ddcc 3 days ago 544MB wonderfall/nextcloud latest 57e1fb51b334 2 months ago 328MB alpine latest 3fd9065eaf02 4 months ago 4.15MB
Figure 1099. Nextcloud latest image
> docker image pull nextcloud Using default tag: latest latest: Pulling from library/nextcloud ❶ Digest: sha256:fb3e77f19b21364925e8f02d6e5ad3a1 ... ❷ Status: Downloaded newer image for nextcloud:latest
|
No «Pull
complete» messages, image is alias of
|
|
|
Digest value identical to Figure 1097, “Nextcloud image by version ”. |
Figure 1100. Duplicate Nextcloud images
> docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE nextcloud 13.0.4 dac77467ddcc 4 days ago 544MB nextcloud latest dac77467ddcc 4 days ago 544MB ...
Figure 1101. Maven ringing a bell?
<dependency>
<groupId>junit</groupId> <!-- wonderfall -->
<artifactId>junit</artifactId> <!-- nextcloud -->
<version>4.12</version> <!-- 13.0.4 -->
</dependency>Figure 1102. Un tag image by version
> docker image rm nextcloud:latest Untagged: nextcloud:latest > docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE nextcloud 13.0.4 dac77467ddcc 4 days ago 544MB ...
Figure 1103. Remove image by version
> docker image rm nextcloud:13.0.2 Untagged: nextcloud:latest Untagged: nextcloud@sha256:c693921e69cb89cd0bee7c014280159df647e5ba87f54c895650156d973df035 Deleted: sha256:10ae267ddcf25bfe5cc059685d3d005bcfe7229b44c3a6f93e0a07795d33b5b2 Deleted: sha256:1c271f4f2f19a222cd116c771b02294c5dd596fa8a0366559061f83a0de8de3f ... Deleted: sha256:2c833f307fd8f18a378b71d3c43c575fabdb88955a2198662938ac2a08a99928
