refactor: remove docker dependency for Pid container property

pkg/client/compose/service.go

@@ -53,7 +53,7 @@ func ServiceSpecFromCompose(project *types.Project, serviceName string) (api.Ser
 			Healthcheck: healthcheckFromCompose(service.HealthCheck),
 			Image:       service.Image,
 			Init:        service.Init,
-			Pid:         container.PidMode(service.Pid),
+			PidMode:     service.Pid,
 			Privileged:  service.Privileged,
 			PullPolicy:  pullPolicy,
 			Resources:   resourcesFromCompose(service),

pkg/client/compose/service_test.go

@@ -127,7 +127,7 @@ func TestServiceSpecFromCompose(t *testing.T) {
 								"max-file": "3",
 							},
 						},
-						Pid:        "host",
+						PidMode:    "host",
 						Privileged: true,
 						PullPolicy: api.PullPolicyAlways,
 						Resources: api.ContainerResources{

pkg/client/deploy/container_test.go

@@ -58,7 +58,7 @@ func TestEvalContainerSpecChange_ContainerPid(t *testing.T) {
 	newSpec := api.ServiceSpec{
 		Container: api.ContainerSpec{
 			Image:  "nginx:latest",
-			Pid:    "host",
+			PidMode: "host",
 			CapAdd: []string{"NET_ADMIN"},
 		},
 	}