Add insecure and plain-http flag when pull and push

[pytimer]

This is the first commit about pull/push to an insecure registry.

This PR implement pull or push to an insecure registry using the CNAME, but using the ip address is wrong. So this PR setting WIP.

If someone know why, please tell me, thanks.

TODO:

• pull/push to an insecure registry using the ip address, such as 192.168.100.20:8443.
• add --plain-http to pull or push a HTTP registry.

Related issue:

• How can I push chart to an insecure OCI registry with helm v3 helm/helm#6324

[jdolitsky]

@pytimer this looks good so far. If we could add some section to your part in the readme like "please use --insecure on push and pull"

[jdolitsky]

/test

[pytimer]

@jdolitsky This insecure flag is invalid for using ip address to access an insecure registry, do you know why?

I have no idea about it, so I think it maybe can not merge if this question not solved.

[pytimer]

@jdolitsky I finish this feature, hope you can review it.

I also update the README.md about this feature usage, my english not good, so if not described clearly, please point out.

[jdolitsky]

@pytimer thanks for looking into this. I left a few comments.

It's also unclear why we now need --plain-http for localhost:5000 (or do we?) I think the new flag is only needed for IP address as host

[pytimer]

@jdolitsky Sorry, my example not descirbed clearly, i update the README.md, you can see again.

The --plain-http used when using with the plain HTTP registry, --insecure used when using with the insecure HTTPS registry.

[jdolitsky]

/test

[zygon4]

@pytimer is the entire commit for this PR held back due to this conflict? Is anyone looking at finishing the merge?

Thanks!

[pytimer]

@zygon4 I waiting review completed.

@jdolitsky @zygon4 I solve the conflict files and move documents to implementors.md, please review them. Thanks.

[zygon4]

@zygon4 I waiting review completed.

@jdolitsky @zygon4 I solve the conflict files and move documents to implementors.md, please review them. Thanks.

Thanks so much! I don't think I'm qualified to review, however. @jdolitsky ?

Thanks again!

[jdolitsky]

thanks again @pytimer !