From a50e5610c3b3b941183cf090ab763dca8b1796d1 Mon Sep 17 00:00:00 2001
From: Justin McLellan <jmclellan9@gatech.edu>
Date: Sat, 4 Jul 2026 01:01:16 -0500
Subject: [PATCH] Cache-mount the pnpm store in the Docker build

Shares a warm, content-addressable pnpm store (id=pnpm-store) across C4G
app builds on the same BuildKit instance, so slow/interrupted installs on
the deploy server reuse already-downloaded packages.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 1ad00ae..ef1da77 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,8 @@ COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
 
 # Install dependencies (ignore-scripts skips husky's prepare hook;
 # native packages such as sharp ship prebuilt binaries so no build step is needed)
-RUN pnpm install --frozen-lockfile --ignore-scripts
+RUN --mount=type=cache,id=pnpm-store,target=/pnpm/store \
+    pnpm install --frozen-lockfile --ignore-scripts --store-dir=/pnpm/store
 
 # Copy source code
 COPY . .