`toolbox run` does not return status of the command

**Describe the bug**

`toolbox run` does not return the status of the executed command, it always returns status 0 regardless of the actual status of the command. Thus, toolbox is a great tool for interactive work, but it is hardly usable *in scripts*. For example, if I run `make` in a container (e. g. `toolbox run make`), the caller script can't easily know if the build was successful or failed. To find out build status I have to implement various workarounds.

**Steps how to reproduce the behaviour**

toolbox create
toolbox run true; echo $?
toolbox run false; echo $?
toolbox run /bin/bash -c "exit 33"; echo $?

**Actual behaviour**

$ toolbox run true; echo $?
0
$ toolbox run false; echo $?
0
$ toolbox run /bin/bash -c "exit 33"; echo $?
0

Note: toolbox status is always 0, regardless of the status of the executed command.

**Expected behaviour**

$ toolbox run true; echo $?
0
$ toolbox run false; echo $?
1
$ toolbox run /bin/bash -c "exit 33"; echo $?
33

**Output of `toolbox --version` (v0.0.90+)**

$ toolbox --version
toolbox version 0.0.97

**Toolbox package info (`rpm -q toolbox`)**

$ rpm -q toolbox
toolbox-0.0.97-1.fc33.x86_64

**Output of `podman version`**

$ podman --version
podman version 2.2.1

**Podman package info (`rpm -q podman`)**

$ rpm -q podman
podman-2.2.1-1.fc33.x86_64

**Info about your OS**

$ cat /etc/system-release
Fedora release 33 (Thirty Three)
$ uname -a
Linux antec 5.8.18-300.fc33.x86_64 #1 SMP Mon Nov 2 19:09:05 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

**Additional context**

`podman exec` does return the status of the executed command:

$ podman exec fedora-toolbox-33 true; echo $?
0
$ podman exec fedora-toolbox-33 false; echo $?
1
$ podman exec fedora-toolbox-33 /bin/bash -c "exit 33"; echo $?
33

`fedora-toolbox-33` is the container created by toolbox. So, both container and podman work perfectly, but toolbox does not.