Tag and upload an image

# Tag a local image pointing to the registry
docker tag <imagen>:<tag> <IP_DE_LA_VM>/<imagen>:<tag>

# Upload image
  docker push <IP_DE_LA_VM>/<imagen>:<tag>

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Download an image

docker pull <IP_DE_LA_VM>/<imagen>:<tag>

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Complete example

docker tag mi-app:latest 200.25.101.125/mi-app:latest
docker push 200.25.101.125/mi-app:latest
docker pull 200.25.101.125/mi-app:latest

⚠️ HTTP Registry (insecure): By default, the registry runs over HTTP. Docker requires configuring the IP address as insecure-registry on the client to operate without TLS.

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Configure insecure-registry on the Docker client

Add your VM's IP address to /etc/docker/daemon.json on the machine that will be doing the push/pull:

{
  "insecure-registries": ["<IP_DE_LA_VM>"]
}

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Then restart Docker:

sudo systemctl restart docker

# View the registry pod
kubectl get pods -A | grep docker-registry

# View the image catalog via API
curl http://<IP_DE_LA_VM>/v2/_catalog

# View installation log
  tail -f /var/log/cuemby/bootstrap.log

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Expected response from the catalog:

{"repositories": []}

# Verify that the registry is responding
curl http://<IP_DE_LA_VM>/v2/

# List stored images
  curl http://<IP_DE_LA_VM>/v2/_catalog

# View tags of a specific image
    curl http://<IP_DE_LA_VM>/v2/<imagen>/tags/list

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Expected response from /v2/:

{}

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💡 Tip: You can use this registry as an image source directly in k3s. Configure mirrors in /etc/rancher/k3s/registries.yaml so that the nodes resolve images from your private registry.