build(docker): update Dockerfile

Dockerfile

@@ -1,18 +1,21 @@
-FROM oven/bun:1.0.3@sha256:4b3393b507e40a1a6a4b8d3c47c59a5a733a9f96eb0f61b397d0789ef7660e72 as base
+FROM oven/bun:1.0.4-alpine@sha256:07343bd778e11bad4c6b434737e4cafc843cefcf69523b3868c4443e564f38b9 as base
 LABEL maintainer "DeadNews <aurczpbgr@mozmail.com>"
 
 WORKDIR /app
 
 FROM base as runtime
 
-ENV NODE_ENV=production
+ENV NODE_PORT=3000 \
+    NODE_HOSTNAME=0.0.0.0 \
+    NODE_ENV=production
 
 COPY package.json bun.lockb ./
 COPY src/ ./src/
 RUN bun install --production --frozen-lockfile
 
 USER bun:bun
-EXPOSE 1271
-HEALTHCHECK --interval=60s --timeout=3s CMD curl --fail http://127.0.0.1:1271/health || exit 1
+EXPOSE ${NODE_PORT}
+HEALTHCHECK --interval=60s --timeout=3s \
+     CMD wget --no-verbose --tries=1 --spider http://127.0.0.1:${NODE_PORT}/health || exit 1
 
 CMD ["bun", "start"]

src/app.ts

@@ -4,11 +4,12 @@
 // If the request path is "/health", it responds with "OK".
 // For any other request path, it responds with "404!".
 export function start() {
-  let port = process.env.PORT || 1271;
-  console.log(`Starting HTTP server at http://127.0.0.1:${port}.`);
+  console.log(
+    `Starting HTTP server at`,
+    `http://${Bun.env.NODE_HOSTNAME}:${Bun.env.NODE_PORT}.`,
+  );
 
   Bun.serve({
-    port: port,
     fetch(req) {
       const url = new URL(req.url);
       if (url.pathname === "/") return new Response("Hello, World!");