docker-registryskopeo

why can't skopeo inspect the local registry?

I have the following images on RHEL7:

sudo docker images
REPOSITORY                              TAG                 IMAGE ID            CREATED             SIZE
localhost:5000/myrhel7                  latest              dc2f776f25d9        6 days ago          208 MB
registry.access.redhat.com/rhel7/rhel   latest              dc2f776f25d9        6 days ago          208 MB

skopeo fails so:

sudo skopeo inspect  docker://localhost:5000/myrhel7
FATA[0000] Error parsing image name "docker://localhost:5000/myrhel7": error pinging docker registry localhost:5000: Get https://localhost:5000/v2/: http: server gave HTTP response to HTTPS client

Then, following the Red Hat documentation I prepended "http:":

sudo skopeo inspect  docker://http:localhost:5000/myrhel7
FATA[0000] Error parsing image name "docker://http:localhost:5000/myrhel7": invalid reference format

The same occurs prepending "http://" :

sudo skopeo inspect  docker://http://localhost:5000/myrhel7
FATA[0000] Error parsing image name "docker://http://localhost:5000/myrhel7": invalid reference format

So, Am I doing something wrong? How do I fix it?

Solution

  • Skopeo supports this with an undocumented parameter --tls-verify (at least it's hidden from the --help output):

    skopeo inspect --tls-verify=false  docker://localhost:5000/myrhel7

    See issue 459 for the appropriate option on other commands.