chore: remove multi-stage builder

Dockerfile

@@ -1,19 +1,15 @@
 # syntax=docker/dockerfile:1.7
 
-FROM node:24-alpine AS base
+FROM node:24-alpine AS builder
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 RUN corepack enable
 
-FROM base AS deps
 WORKDIR /app
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
 RUN --mount=type=cache,id=pnpm-store,target=/pnpm/store \
     pnpm install --frozen-lockfile
 
-FROM base AS builder
-WORKDIR /app
-COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 RUN --mount=type=cache,id=pnpm-store,target=/pnpm/store \
     pnpm run build