fix: build workspace packages in Dockerfile before starting app

Author: jacksonkasi1

apps/hono-example/Dockerfile

@@ -7,9 +7,15 @@ WORKDIR /app
 COPY . .
 
 # Install dependencies for the entire monorepo
-# Do not use --frozen-lockfile to avoid lockfile version mismatch errors
 RUN bun install
 
+# Build workspace packages in dependency order:
+# 1. engine (no internal deps)
+# 2. adapter-hono and plugin-cache (both depend on engine)
+RUN bun run --cwd packages/engine build
+RUN bun run --cwd packages/plugin-cache build
+RUN bun run --cwd packages/adapter-hono build
+
 # Set environment to production
 ENV NODE_ENV=production