diff --git a/Dockerfile b/Dockerfile
index b38e6e6..0e48eae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,8 @@ WORKDIR /app
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies (production only)
-RUN npm ci --only=production
+# Install all dependencies (needed for build)
+RUN npm ci
 
 # Copy source code
 COPY . .
@@ -15,6 +15,9 @@ COPY . .
 # Build the application
 RUN npm run build
 
+# Remove devDependencies to reduce image size
+RUN npm prune --production
+
 # Create data directory for encrypted local storage
 RUN mkdir -p /app/data && chmod 755 /app/data