Problem to install Savu inside a Singularity container

Hello guys !.

I'm following the [official tutorial as PC (Unix)](https://savu.readthedocs.io/en/latest/howto/install/savu_lite.html) to install the Savu package inside a Singularity container. This image also contains **micromamba** instead of **miniconda**. When executing the installating using micromamba, I run the following command

```bash
micromamba create -n test_savu -c savu-dep savu-lite numpy -c conda-forge scipy==1.5.2 -c conda-forge
```
With the output
```bash
savu-dep/noarch No change
savu-dep/linux-64 No change
conda-forge/linux-64 31.4MB @ 20.0MB/s 2.0s
conda-forge/noarch 13.0MB @ 5.2MB/s 2.7s
error libmamba Could not solve for environment specs
The following package could not be installed
└─ savu-lite is not installable because it requires
└─ scipy 1.5.2 py37h0b6359f_0, which does not exist (perhaps a missing channel).
critical libmamba Could not solve for environment specs
```

I Also tried to install this package donwload [scipy 1.5.2 py37h0b6359f_0](https://anaconda.org/anaconda/scipy/files?version=1.5.2) version, but I got no sucess.

Can anyone helps me with this task ?