refactor: support pid shared

Signed-off-by: thxCode <[email protected]>

Author: thxCode

gpustack_runtime/deployer/__types__.py

@@ -630,6 +630,7 @@ class WorkloadPlan(WorkloadSecurity):
             Labels for the workload.
         host_network (bool):
             Indicates if the workload uses the host network.
+
         shm_size (int | str | None):
             Configure shared memory size for the workload.
         run_as_user (int | None):
@@ -659,6 +660,10 @@ class WorkloadPlan(WorkloadSecurity):
     """
     Indicates if the workload uses the host network.
     """
+    pid_shared: bool = False
+    """
+    Indicates if the workload shares the PID namespace.
+    """
     shm_size: int | str | None = None
     """
     Configure shared memory size for the workload.

gpustack_runtime/deployer/docker.py

@@ -643,6 +643,9 @@ def _create_containers(
             if not workload.host_network:
                 create_params["hostname"] = c.name
 
+            if workload.pid_shared:
+                create_params["pid_mode"] = "container:{workload.name}-pause"
+
             if workload.shm_size:
                 create_params["shm_size"] = workload.shm_size