diff --git a/Dockerfile b/Dockerfile
index 1484a58..d2fde4e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,17 +12,21 @@ FROM deps AS builder
 
 WORKDIR /app
 
-# Clone and build patched emdash source
+# Clone patched emdash source
 RUN git clone --depth=1 https://git.moreminimore.com/kunthawat/emdash-patch-imageupload.git emdash-source
 WORKDIR /app/emdash-source
-RUN pnpm install && pnpm build --filter @emdash-cms/core
+
+# Build only the emdash package (it's named "emdash" not "@emdash-cms/core")
+RUN corepack enable && corepack prepare pnpm@9.0.0 --activate
+RUN pnpm install
+RUN pnpm build --filter emdash
 
 # Return to app and copy source
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
-# Replace emdash with built source using pnpm overrides
+# Replace emdash with built source
 RUN rm -rf node_modules/emdash && cp -r /app/emdash-source/packages/core/dist node_modules/emdash
 
 RUN pnpm build && mkdir -p storage/uploads