refactor!: drop the Docker CLI methods

get_docker_info(), get_docker_outdated(), reconstruct_docker_run() and
the _docker_bin() hook go, with the image-ID helpers. netOrk reads and
handles containers over the Engine API through open_container_engine()
since NetOrk/netork#765 and no longer calls them (phase 9). The
fix_docker_permissions action stays: it is an OS action.

Version 0.3.0.

tests/test_linux.py

@@ -866,60 +866,18 @@ class TestRunDeviceActionDispatch:
         mock_action.assert_called_once()
 
 
-class TestDockerBinHook:
-    """Where the docker binary lives is device-specific; what to do with it is not.
+class TestNoDockerOfItsOwn:
+    """Containers are read and handled by netOrk over the Engine API, through
+    ``open_container_engine`` (NetOrk/netork#765). The old CLI methods are gone;
+    only the OS action that lets the login user use Docker stays."""
 
-    QTS puts Container Station's docker under /share/<pool>/.qpkg/ and not on
-    PATH. Rather than duplicating the whole Docker surface in the QNAP driver,
-    the path is a one-method hook here and the logic stays generic. See
-    docs/ARCHITECTURE.md §4.4, "Generisch vs. treiberspezifisch".
-    """
+    def test_the_cli_methods_are_gone(self):
+        for name in ("get_docker_info", "get_docker_outdated", "reconstruct_docker_run", "_docker_bin"):
+            assert not hasattr(LinuxDriver, name), name
 
-    def test_defaults_to_docker_on_path(self, driver):
-        assert driver._docker_bin() == "docker"
-
-    def test_detection_uses_the_hook(self, driver):
-        """A subclass pointing elsewhere must not be probed for a PATH docker."""
-        sent = []
-
-        def _record(cmd, **kwargs):
-            sent.append(cmd)
-            return ""
-
-        with patch.object(driver, "_docker_bin", return_value="/opt/cs/docker"):
-            with patch.object(driver, "_send", side_effect=_record):
-                result = driver.get_docker_info()
-
-        assert result == {"available": False}
-        assert any("/opt/cs/docker" in cmd for cmd in sent)
-        assert not any("command -v docker " in cmd for cmd in sent)
-
-    def test_all_docker_subcommands_use_the_hook(self, driver):
-        """Half-converted call sites are the failure mode here: detection would
-        find the binary and the actual queries would still miss it."""
-        sent = []
-
-        def _record(cmd, **kwargs):
-            sent.append(cmd)
-            if "command -v" in cmd:
-                return "/opt/cs/docker"
-            if "---CONTAINERS---" in cmd:
-                return "---CONTAINERS---\n---IMAGES---\n---VOLUMES---\n---NETWORKS---\n"
-            return ""
-
-        with patch.object(driver, "_docker_bin", return_value="/opt/cs/docker"):
-            with patch.object(driver, "_send", side_effect=_record):
-                driver.get_docker_info()
-
-        docker_cmds = [c for c in sent if "docker" in c]
-        assert docker_cmds
-        for cmd in docker_cmds:
-            assert "/opt/cs/docker" in cmd, f"unconverted call site: {cmd}"
-
-
-# ---------------------------------------------------------------------------
-# uninstall_package – purge, and getting out of `install ok unpacked`
-# ---------------------------------------------------------------------------
+    def test_the_engine_access_and_the_permission_fix_stay(self):
+        assert hasattr(LinuxDriver, "open_container_engine")
+        assert hasattr(LinuxDriver, "_action_fix_docker_permissions")
 
 
 class TestUninstallPackage: