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Add configuration step required for recent versions of singularity #46

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vsoch merged 2 commits into from
Sep 30, 2021
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Add configuration step required for recent versions of singularity #46

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Add configuration step required for recent versions of singularity
PauloMigAlmeida Sep 30, 2021
61ac8d3
Update docs/spec/spec-2.0.md
PauloMigAlmeida Sep 30, 2021
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16 changes: 16 additions & 0 deletions docs/spec/spec-2.0.md
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Expand Up @@ -113,6 +113,22 @@ The example below will run a container that exposes the port `5432` to the host.
- 5432:5432
```

**Observation:** In recent versions of the Singularity CLI, there is the need for tweaking the
`/etc/singularity/singularity.conf` to allow `fakeroot` to bind to ports otherwise
an error will be thrown at container execution similar to this:

```
INFO: Converting SIF file to temporary sandbox...
ERROR: Network fakeroot is not permitted for unprivileged users.
INFO: Cleaning up image...
```

To allow fakeroot to bind ports without sudo you need to execute this:

```
echo "allow net networks = bridge, fakeroot" >> /etc/singularity/singularity.conf
```

## Start Group

Startscript options generally include those for networking, and any other flags
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