fix: there is no destinction between prompts

with distrobox 1.7, the hostname is now in sync with the host. This commit explicitly sets the hostname to the subsystem name. Also allows to set a custom one using the Hostname key in the Subsystem struct.

cmd/subsyStems.go

@@ -242,7 +242,7 @@ func newSubSystem(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	subSystem, err := core.NewSubSystem(subSystemName, stack, home, isInit, false, false, false, true)
+	subSystem, err := core.NewSubSystem(subSystemName, stack, home, isInit, false, false, false, true, "")
 	if err != nil {
 		return err
 	}

core/dbox.go

@@ -238,7 +238,7 @@ func (d *dbox) ContainerDelete(name string, rootFull bool) error {
 	return err
 }
 
-func (d *dbox) CreateContainer(name string, image string, additionalPackages []string, home string, labels map[string]string, withInit bool, rootFull bool, unshared bool, withNvidiaIntegration bool) error {
+func (d *dbox) CreateContainer(name string, image string, additionalPackages []string, home string, labels map[string]string, withInit bool, rootFull bool, unshared bool, withNvidiaIntegration bool, hostname string) error {
 	args := []string{
 		"--image", image,
 		"--name", name,
@@ -263,6 +263,12 @@ func (d *dbox) CreateContainer(name string, image string, additionalPackages []s
 		args = append(args, "--unshare-all")
 	}
 
+	if hostname != "" {
+		args = append(args, "--hostname", hostname)
+	} else {
+		args = append(args, "--hostname", name)
+	}
+
 	if len(additionalPackages) > 0 {
 		args = append(args, "--additional-packages")
 		args = append(args, strings.Join(additionalPackages, " "))

core/subSystem.go

@@ -32,9 +32,10 @@ type SubSystem struct {
 	IsRootfull           bool
 	IsUnshared           bool
 	HasNvidiaIntegration bool
+	Hostname             string
 }
 
-func NewSubSystem(name string, stack *Stack, home string, hasInit bool, isManaged bool, isRootfull bool, isUnshared bool, hasNvidiaIntegration bool) (*SubSystem, error) {
+func NewSubSystem(name string, stack *Stack, home string, hasInit bool, isManaged bool, isRootfull bool, isUnshared bool, hasNvidiaIntegration bool, hostname string) (*SubSystem, error) {
 	internalName := genInternalName(name)
 	return &SubSystem{
 		InternalName:         internalName,
@@ -46,6 +47,7 @@ func NewSubSystem(name string, stack *Stack, home string, hasInit bool, isManage
 		IsRootfull:           isRootfull,
 		IsUnshared:           isUnshared,
 		HasNvidiaIntegration: hasNvidiaIntegration,
+		Hostname:             hostname,
 	}, nil
 }
 
@@ -150,6 +152,7 @@ func (s *SubSystem) Create() error {
 		s.IsRootfull,
 		s.IsUnshared,
 		s.HasNvidiaIntegration,
+		s.Hostname,
 	)
 	if err != nil {
 		return err