Fix Docker build and change port to 8880

- Install all dependencies including devDependencies for build
- Change port mapping from 8080 to 8880

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Dockerfile

@@ -8,8 +8,8 @@ WORKDIR /app
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies
-RUN npm ci --only=production
+# Install all dependencies (including dev dependencies needed for build)
+RUN npm ci
 
 # Copy source code
 COPY . .