If you want to pull container-images from an insecure registry with podman, you need to configure podman to allow this insecure registry.

Otherwise, you get this error

error pinging docker registry my-registry.local:5000: Get "https://my-registry.local:5000/v2/": http: server gave HTTP response to HTTPS client

The registry-configurations are located under /etc/containers/registries.conf.d/.
If you want to add a new registry simply add a new file that ends in .conf. The Filename can be the name of the registry, but this is not required, as long as the file ends with .conf.

Open the file and specify the following lines.

vim /etc/containers/registries.conf.d/my-registry.local.conf

[[registry]]
location = "my-registry.local:5000"
insecure = true

After that you can push and pull images without an error.