fix: more performant ps'in

cli/app/ps.go

@@ -8,11 +8,13 @@ import (
 	"coopcloud.tech/abra/cli/internal"
 	"coopcloud.tech/abra/pkg/autocomplete"
 	"coopcloud.tech/abra/pkg/client"
+	"coopcloud.tech/abra/pkg/config"
 	stack "coopcloud.tech/abra/pkg/upstream/stack"
 	"github.com/buger/goterm"
 	"github.com/docker/cli/cli/command/formatter"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
+	dockerClient "github.com/docker/docker/client"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli/v2"
 )
@@ -27,15 +29,31 @@ var appPsCommand = &cli.Command{
 	},
 	BashComplete: autocomplete.AppNameComplete,
 	Action: func(c *cli.Context) error {
+		app := internal.ValidateApp(c)
+
+		cl, err := client.New(app.Server)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+
+		isDeployed, _, err := stack.IsDeployed(c.Context, cl, app.StackName())
+		if err != nil {
+			logrus.Fatal(err)
+		}
+
+		if !isDeployed {
+			logrus.Fatalf("%s is not deployed?", app.Name)
+		}
+
 		if !internal.Watch {
-			showPSOutput(c)
+			showPSOutput(c, app, cl)
 			return nil
 		}
 
 		goterm.Clear()
 		for {
 			goterm.MoveCursor(1, 1)
-			showPSOutput(c)
+			showPSOutput(c, app, cl)
 			goterm.Flush()
 			time.Sleep(2 * time.Second)
 		}
@@ -43,23 +61,7 @@ var appPsCommand = &cli.Command{
 }
 
 // showPSOutput renders ps output.
-func showPSOutput(c *cli.Context) {
-	app := internal.ValidateApp(c)
-
-	cl, err := client.New(app.Server)
-	if err != nil {
-		logrus.Fatal(err)
-	}
-
-	isDeployed, _, err := stack.IsDeployed(c.Context, cl, app.StackName())
-	if err != nil {
-		logrus.Fatal(err)
-	}
-
-	if !isDeployed {
-		logrus.Fatalf("%s is not deployed?", app.Name)
-	}
-
+func showPSOutput(c *cli.Context, app config.App, cl *dockerClient.Client) {
 	filters := filters.NewArgs()
 	filters.Add("name", app.StackName())