feat(docker): 改用 socket activation 并在启用时加入 docker 用户组

modules/docker.py

@@ -1,11 +1,13 @@
+import decman
 from decman import Module
 from decman.plugins.pacman import packages
 from decman.plugins.systemd import units
 
 
 class DockerModule(Module):
-    def __init__(self):
+    def __init__(self, user: str):
         super().__init__("docker")
+        self.user = user
 
     @packages
     def packages(self) -> set[str]:
@@ -13,4 +15,7 @@ class DockerModule(Module):
 
     @units
     def units(self) -> set[str]:
-        return {"docker.service"}
+        return {"docker.socket"}
+
+    def on_enable(self, store):
+        decman.prg(["gpasswd", "-a", self.user, "docker"])