Add login support for dockerhub (#2218)

* Add login support for dockerhub

* Remove registry

tests/docker/test_credentials.py

@@ -0,0 +1,40 @@
+"""Test docker login."""
+# pylint: disable=protected-access
+from supervisor.coresys import CoreSys
+from supervisor.docker.interface import DOCKER_HUB, DockerInterface
+
+
+def test_no_credentials(coresys: CoreSys):
+    """Test no credentials."""
+    docker = DockerInterface(coresys)
+    coresys.docker.config.registries = {
+        DOCKER_HUB: {"username": "Spongebob Squarepants", "password": "Password1!"}
+    }
+    assert not docker._get_credentials("ghcr.io/homeassistant")
+    assert not docker._get_credentials("ghcr.io/homeassistant/amd64-supervisor")
+
+
+def test_no_matching_credentials(coresys: CoreSys):
+    """Test no matching credentials."""
+    docker = DockerInterface(coresys)
+    coresys.docker.config.registries = {
+        DOCKER_HUB: {"username": "Spongebob Squarepants", "password": "Password1!"}
+    }
+    assert not docker._get_credentials("ghcr.io/homeassistant")
+    assert not docker._get_credentials("ghcr.io/homeassistant/amd64-supervisor")
+
+
+def test_matching_credentials(coresys: CoreSys):
+    """Test no matching credentials."""
+    docker = DockerInterface(coresys)
+    coresys.docker.config.registries = {
+        "ghcr.io": {"username": "Octocat", "password": "Password1!"},
+        DOCKER_HUB: {"username": "Spongebob Squarepants", "password": "Password1!"},
+    }
+
+    credentials = docker._get_credentials("ghcr.io/homeassistant/amd64-supervisor")
+    assert credentials["registry"] == "ghcr.io"
+
+    credentials = docker._get_credentials("homeassistant/amd64-supervisor")
+    assert credentials["username"] == "Spongebob Squarepants"
+    assert "registry" not in credentials