Can you share some logs?

I have the same, I pushed a small change and now my container crashed.

When I reverted to the previous version (another image on docker hub from last week) it still crashes. What changed on Railway end?

can you share logs?

It mentions "AH00534: apache2: Configuration error: More than one MPM loaded."

Notice that I build a new image with my changes (UI changes, CSS) and now I reverted to the image that has been running smooth since last week. And now it's failing to start. Weird?

I moved back

FROM php:8.4-apache

to

FROM php:8.3-apache

and added CMD rm -f /etc/apache2/mods-enabled/mpm_event.* /etc/apache2/mods-enabled/mpm_worker.* && \

a2enmod mpm_prefork 2>/dev/null || true && \

apache2-foreground

instead of CMD ["apache2-foreground"] as a work around. But what happened on railway?

I don't think is railway, as far as I can see you didn't use a tag in your dockerfile, this mean it always takes the latest version, I can see that php:8.4 has been updated 4 days ago:
https://hub.docker.com/layers/library/php/8.4-apache/images/sha256-63d1df5ea11815a071a46ba2633fada567fd41397d45fb133b78d6f3bb483123?context=repo

it might be they have changed something and now the image works in a different way compared to the previous version.