[SOLVED] docker registry: https instead of http

docker registry: https instead of http

I've just deployed a docker registry.

I'm able to get access to it using:

$ curl -I chart-example.local/v2/                                                                                                                         
HTTP/1.1 200 OK
Content-Length: 2
Content-Type: application/json; charset=utf-8
Date: Tue, 28 Jan 2020 20:10:35 GMT
Docker-Distribution-Api-Version: registry/2.0
Vary: Accept-Encoding
X-Content-Type-Options: nosniff

However, when I'm trying to push an local image to it, I'm getting this message:

$ docker push chart-example.local/feedly:latest                                                                                                                                                                                                                                                                          
The push refers to repository [chart-example.local/feedly]
Get https://chart-example.local/v2/: x509: certificate has expired or is not yet valid

Why docker is trying to get access using https instead of http?

Solution

Docker uses https by default for security. You can override this setting by modifying your daemon.json file with the following content. Do not use this setting in production.

 {
   "insecure-registries" : ["chart-example.local"]
 }

Docker will use http://chart-example.local and not https://chart-example.local
See this link for more information: https://docs.docker.com/registry/insecure/