From ea1667690e644316a5d0d9fc21c043fa6ee6895d Mon Sep 17 00:00:00 2001
From: Augustin Zidek <augustinzidek@google.com>
Date: Fri, 20 Feb 2026 03:40:43 -0800
Subject: [PATCH] Update Docker build instructions for AlmaLinux/Rocky/RHEL
 users

Addresses https://github.com/google-deepmind/alphafold3/issues/612.

PiperOrigin-RevId: 872822931
Change-Id: Ibb4db9640805e4b59b68d93b13595224636a1af6
---
 docs/installation.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/installation.md b/docs/installation.md
index ac71ba3..1f91b26 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -285,6 +285,14 @@ python dependencies:
 docker build -t alphafold3 -f docker/Dockerfile .
 ```
 
+If you hit `No file descriptors available (os error 24)` on systems like
+AlmaLinux/Rocky/RHEL, you need to manually expand the file descriptor limits
+during the build by appending `--ulimit nofile=65535:65535`:
+
+```sh
+docker build --ulimit nofile=65535:65535 -t alphafold3 -f docker/Dockerfile .
+```
+
 Create an input JSON file, using either the example in the
 [README](https://github.com/google-deepmind/alphafold3?tab=readme-ov-file#installation-and-running-your-first-prediction)
 or a