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fix: explain the hostname requirement when the executor cannot find its own container #256

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fix: explain the hostname requirement when the executor cannot find its own container #256

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fix: explain the hostname requirement when the executor cannot find i…
HarshMN2345 Sep 29, 2026
3e2d3da
fix: describe the own container lookup as a substring match
HarshMN2345 Sep 29, 2026
7ef0398
docs: explain why the example hostname finds its container
HarshMN2345 Oct 5, 2026
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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -74,6 +74,8 @@ volumes:

> Notice we added bind to local `./functions` directory. That is only nessessary for this getting started, since we will be executing our custom function.

> On startup, executor looks up its own container by hostname to connect it to the runtime networks, and exits if the hostname is not part of any container name. In the example above, `executor` is part of `openruntimes-executor`, so the lookup succeeds; using the full container name as the hostname avoids relying on a partial match.

3. Create `.env` file:

```
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3 changes: 2 additions & 1 deletion app/http.php
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Expand Up @@ -40,7 +40,8 @@

/* Fetch own container information */
$hostname = gethostname() ?: throw new \RuntimeException('Could not determine hostname');
$selfContainer = $orchestration->list(['name' => $hostname])[0] ?? throw new \RuntimeException('Own container not found');
$selfContainer = $orchestration->list(['name' => $hostname])[0]
?? throw new \RuntimeException(sprintf('Own container not found for hostname "%s". Set the executor hostname to its container name.', $hostname));

/* Create desired networks if they don't exist */
$network->setup(
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