Expanded version of explanations for typical workflow

[yarikoptic]

Since it is all not explained and cryptic, worth spelling each point out! Do it within

<details>
<summary>The version of the script with more explanations</summary> 

```shell

```
</details>

so it would look like

The version of the script with more explanations

```shell here it comes ```

[asmacdo]

Fixed by https://github.com/ReproNim/containers/pull/84/