flag to allow insecure tls (ignore untrusted server cert)

[ravensorb]

Describe the problem or bug
I have an installation of harbor with a self-signed certificate. When trying to use pushrm I am getting an invalid cert (note: push works for the image as i have configured docker to ignore). Is there a way to tell pushrm to ignore the error as well?

docker-pushrm version
pushrm* Push Readme to container registry (Christian Korneck, 1.9.0)

Docker CLI version and platform
Client: Docker Engine - Community
Version: 20.10.17
API version: 1.41
Go version: go1.17.11
Git commit: 100c701
Built: Mon Jun 6 23:02:57 2022
OS/Arch: linux/amd64
Context: default
Experimental: true

Server: Docker Engine - Community
Engine:
Version: 20.10.17
API version: 1.41 (minimum version 1.12)
Go version: go1.17.11
Git commit: a89b842
Built: Mon Jun 6 23:01:03 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.8
GitCommit: 9cd3357b7fd7218e4aec3eae239db1f68a5a6ec6
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0

if possible: registry server version
self-hosted harbor version 2.0.0

exact command that you're running
docker pushrm --debug myimage:latest --providerharbor2

debug output

Publishing Image Readme
DEBU root cmd init config                         
DEBU home dir: /home/ravenwolf.org/sanderson      
DEBU subcommand "pushrm" called                   
DEBU Using target: harbor.internal-sites.org/images/traefik:latest 
DEBU using README file: README.MD                 
DEBU server: harbor.internal-sites.org                 
DEBU namespace: images                         
DEBU repo: traefik                                
DEBU tag: latest                                  
DEBU repo provider: harbor2                       
DEBU Harbor2.GetAuthident called                  
DEBU no credentials found in env vars. Trying Docker credentials store 
DEBU Using config file: /home/localuser/.docker/config.json 
DEBU util.GetDockerCreds called                   
DEBU tried candidate harbor.internal-sites.org: found credentials for user localuser 
DEBU Using Docker creds: localuser ********       
DEBU Harbor2.Pushrm called                        
DEBU Put "https://harbor.internal-sites.org/api/v2.0/projects/images/repositories/traefik": x509: certificate is valid for 4e001b526386b34480ab04d1538a8d04.3026041018f2cef38123353136fd9210.traefik.default, not harbor.internal-sites.org 
DEBU error pushing README, error creating http request 
ERRO error pushing readme to repo server. See error message below. Run with "--debug" for more details. 

error pushing README, error creating http request 

[christian-korneck]

There are currently no docker-pushrm flags that you could set to trust a custom server certificate or allow insecure connections. You could however add the public cert of your server to your OS'es trusted CA certs and it should just work.

This is in line with how several other tools in this space behave:
https://github.com/genuinetools/img#using-self-signed-certs-with-a-registry

Please let me know if this doesn't work for you for some reason or if you need more infos.

[ravensorb]

Understood - maybe this could be a feature request?

[christian-korneck]

maybe this could be a feature request?

Sure. Are there any particular reasons why making the self-signed cert trusted on the machine where you want to run docker-pushrm isn’t practical?

And are you looking to pass the cert to the cli or are you just looking for a convenience --allow-insecure flag?

[ravensorb]

A simple --allow-insecure would be perfect. The other option could be to pull from the global docker daemon.json file "insecure-registries" property?

[christian-korneck]

thanks, these are good thoughts, I will keep this open as a feature request