fix: docker prod build

Dockerfile

@@ -1,8 +1,13 @@
-FROM node:20-alpine3.19
-WORKDIR /app
-COPY package*.json .
+FROM node:20-alpine3.19 as base
+
+FROM base as builder
+WORKDIR /build
+COPY package*.json .npmrc ./
 RUN npm ci --prefer-offline --no-audit
 COPY . .
-RUN npm run build
-RUN npm prune --include=prod
+RUN npm run build && npm prune --production
+
+FROM base
+WORKDIR /app
+COPY --from=builder /build ./
 ENTRYPOINT ["node", "--enable-source-maps", "dist/main.js"]

src/main.prod.ts

@@ -16,7 +16,7 @@ app.use("/assets/*", async (c, next) => {
 app.use("*", serveStatic({ root: "./dist/static" }));
 app.notFound(() => app.request("/"));
 
-const server = serve({ fetch: app.fetch, port: 3000 }, ({ port }) => {
+const server = serve({ fetch: app.fetch, port: Number(process.env.PORT) || 3000 }, ({ port }) => {
   console.log(`server started on http://localhost:${port}/`);
 });
 process.on("SIGINT", () => {