From c6d8d4dfe6ccde0e50048e6ddbcdc892df88bfd9 Mon Sep 17 00:00:00 2001
From: Ken <ken@kenotron.com>
Date: Tue, 26 May 2026 23:07:40 +0000
Subject: [PATCH] fix: set UV_LINK_MODE=copy in Dockerfile for overlayfs
 compatibility
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

uv's reflink-based file cloning fails with EAGAIN inside Docker's
overlayfs. Setting UV_LINK_MODE=copy forces regular file copies.

🤖 Generated with [Amplifier](https://github.com/microsoft/amplifier)

Co-Authored-By: Amplifier <240397093+microsoft-amplifier@users.noreply.github.com>
---
 Dockerfile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 650ba4c..eb3fcad 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,6 +33,9 @@ RUN curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
 # Install uv via pip
 RUN pip install uv
 
+# Disable reflinks — overlayfs doesn't support them (EAGAIN inside Docker builds)
+ENV UV_LINK_MODE=copy
+
 # Copy backend dependency files and install Python dependencies
 COPY backend/pyproject.toml backend/uv.lock /app/backend/
 WORKDIR /app/backend