fix: improved offline support

Closes coop-cloud/organising#471.

cli/app/cp.go

@@ -12,6 +12,7 @@ import (
 	"coopcloud.tech/abra/pkg/config"
 	"coopcloud.tech/abra/pkg/container"
 	"coopcloud.tech/abra/pkg/formatter"
+	"coopcloud.tech/abra/pkg/runtime"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
 	dockerClient "github.com/docker/docker/client"
@@ -27,6 +28,7 @@ var appCpCommand = cli.Command{
 	Flags: []cli.Flag{
 		internal.DebugFlag,
 		internal.NoInputFlag,
+		internal.OfflineFlag,
 	},
 	Before: internal.SubCommandBefore,
 	Usage:  "Copy files to/from a running app service",
@@ -42,7 +44,8 @@ And if you want to copy that file back to your current working directory locally
 		abra app cp <domain> app:/myfile.txt .
 `,
 	Action: func(c *cli.Context) error {
-		app := internal.ValidateApp(c)
+		conf := runtime.New(runtime.WithOffline(internal.Offline))
+		app := internal.ValidateApp(c, conf)
 
 		cl, err := client.New(app.Server)
 		if err != nil {