chore(dev): 改用 Compose named volume

Dockerfile

@@ -1,4 +1,4 @@
-FROM oven/bun:1.3.13 AS build
+FROM oven/bun:1.3.13 AS source
 
 WORKDIR /app
 
@@ -6,6 +6,9 @@ COPY package.json bun.lock ./
 RUN bun install --frozen-lockfile
 
 COPY . .
+
+FROM source AS build
+
 RUN bun run build \
     && bun run compile \
     && mv out/server-* out/server