Fix instructions in Run in production guide

[adamkdean]

Pull Request

Related issue

No issue raised for this. Just a fix.

What does this PR do?

The guide did not mention to set the binary as executable, which is an issue when you're configuring the service to run as the created user. You'll end up seeing a failure:

# systemctl status meilisearch
× meilisearch.service - Meilisearch
     Loaded: loaded (/etc/systemd/system/meilisearch.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2024-09-17 09:00:06 UTC; 2min 37s ago
   Main PID: 22227 (code=exited, status=203/EXEC)
        CPU: 4ms

Sep 17 09:00:06 adam.edge.network systemd[1]: meilisearch.service: Scheduled restart job, restart counter is at 5.
Sep 17 09:00:06 adam.edge.network systemd[1]: Stopped Meilisearch.
Sep 17 09:00:06 adam.edge.network systemd[1]: meilisearch.service: Start request repeated too quickly.
Sep 17 09:00:06 adam.edge.network systemd[1]: meilisearch.service: Failed with result 'exit-code'.
Sep 17 09:00:06 adam.edge.network systemd[1]: Failed to start Meilisearch.

You can see here that following the previous instructions leads to a non-executable file (-rwxr--r--) when we're expecting -rwxr-xr-x:

# ls -l /usr/local/bin/meilisearch
-rwxr--r-- 1 root root 120750704 Sep 17 08:55 /usr/local/bin/meilisearch

# chmod +x /usr/local/bin/meilisearch

# ls -l /usr/local/bin/meilisearch
-rwxr-xr-x 1 root root 120750704 Sep 17 08:55 /usr/local/bin/meilisearch