cmd/initContainer: Bind mount locations regardless of /run/host/etc

Bind mounting the locations at runtime doesn't really have anything to
do with whether /run/host/etc is present inside the Toolbx container.

The only possible exception could have been /etc/machine-id, but it
isn't, because the bind mount is only performed if the source at
/run/host/etc/machine-id is present.

This is a historical mistake that has persisted for a long time, since,
in practice, /run/host/etc will almost always exist inside the Toolbx
container.  It's time to finally correct it.

Fallout from 9436bbece0

https://github.com/containers/toolbox/pull/1255

src/cmd/initContainer.go

@@ -206,18 +206,6 @@ func initContainer(cmd *cobra.Command, args []string) error {
 				return err
 			}
 		}
-
-		for _, mount := range initContainerMounts {
-			if err := mountBind(mount.containerPath, mount.source, mount.flags); err != nil {
-				return err
-			}
-		}
-
-		if utils.PathExists("/sys/fs/selinux") {
-			if err := mountBind("/sys/fs/selinux", "/usr/share/empty", ""); err != nil {
-				return err
-			}
-		}
 	}
 
 	if initContainerFlags.mediaLink {
@@ -236,6 +224,18 @@ func initContainer(cmd *cobra.Command, args []string) error {
 		}
 	}
 
+	for _, mount := range initContainerMounts {
+		if err := mountBind(mount.containerPath, mount.source, mount.flags); err != nil {
+			return err
+		}
+	}
+
+	if utils.PathExists("/sys/fs/selinux") {
+		if err := mountBind("/sys/fs/selinux", "/usr/share/empty", ""); err != nil {
+			return err
+		}
+	}
+
 	if _, err := user.Lookup(initContainerFlags.user); err != nil {
 		if err := configureUsers(initContainerFlags.uid,
 			initContainerFlags.user,