vinxi cache in docker build

Dockerfile

@@ -1,12 +1,45 @@
+# === STAGE 1: Build & Dependencies ===
+FROM node:22 AS builder
+
+WORKDIR /app
+
+# Install pnpm and enable corepack
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+# Copy the lockfile and package.json to leverage caching
+COPY package.json pnpm-lock.yaml ./
+
+# Use a cache mount to persist the pnpm store across builds.
+# The 'pnpm install' command will use this persistent cache.
+RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 \
+    pnpm install --frozen-lockfile
+
+# Copy the rest of the application files
+COPY . .
+
+# Use a second cache mount for the Vinxi build artifacts.
+# This tells Docker to mount a persistent cache directory to a build-cache location.
+# The `pnpm run build` command will now use this cache for incremental builds.
+# We'll assume a `.vinxi` or `.cache` directory for this example.
+RUN --mount=type=cache,target=/app/.vinxi \
+    pnpm run build
+
+# === STAGE 2: Production Final Image ===
 FROM node:22-alpine
 
 WORKDIR /app
+
+# Enable corepack and install only production dependencies
+RUN corepack enable && corepack prepare pnpm@latest --activate
+COPY package.json pnpm-lock.yaml ./
+# This install can also use the cache mount to avoid re-downloading
+RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 \
+    pnpm install --frozen-lockfile --prod
+
+# Copy the compiled assets and lockfile from the builder stage
+COPY --from=builder /app/.output ./.output
+COPY --from=builder /app/package.json ./package.json
+
 EXPOSE 3000
 
-COPY package.json ./
-RUN npm install
-
-COPY . .
-RUN npm run build
-
-CMD ["npm", "run", "start"]
+CMD ["pnpm", "start"]