Docker – Useful CURL:s For Querying Private Registry

Keep it minimal, who needs a fancy GUI for your Docker Registry when you have, CURL? 😉

Get all container images from registry:

~# curl -X GET -u <USERNAME>:<PASSWORD> https://dockerreg.tld/v2/_catalog

Example output:

{"repositories":["axfr","flowerapi","lolwarez","myip","nyancatchat","phyaddr","readthenburn"]}

List all tags for container image:

~# curl -X GET -u <USERNAME>:<PASSWORD> https://dockerreg.tld/v2/<CONTAINERIMAGE>/tags/list

Example output:

{"name":"myip","tags":["x86_64"]}

TIP, combine the curl with -s and jq for pretty output:

~$ curl -s -X GET -u <USERNAME>:<PASSWORD> https://dockerreg.tld/v2/_catalog | jq
{
  "repositories": [
    "axfr",
    "flowerapi",
    "lolwarez",
    "myip",
    "nyanserv",
    "phyaddr",
    "readthenburn"
  ]
}

~$ curl -s -X GET -u <USERNAME>:<PASSWORD> https://dockerreg.tld/v2/<CONTAINERIMAGE>/tags/list | jq
{
  "name": "myip",
  "tags": [
    "x86_64"
  ]
}

Keep it CURL:in ?