From the menu select Registries then click Add registry.
From the Registry provider section select the type of registry you want to add. Portainer provides configuration support for a number of popular registry providers:
{% content-ref url="dockerhub.md" %} dockerhub.md {% endcontent-ref %}
{% content-ref url="ecr.md" %} ecr.md {% endcontent-ref %}
{% content-ref url="quay.md" %} quay.md {% endcontent-ref %}
{% content-ref url="proget.md" %} proget.md {% endcontent-ref %}
{% content-ref url="azure.md" %} azure.md {% endcontent-ref %}
{% content-ref url="gitlab.md" %} gitlab.md {% endcontent-ref %}
You can also add your own custom registry:
{% content-ref url="custom.md" %} custom.md {% endcontent-ref %}