chore: resolve docker build issue

Add separate tsdown config for building server file

Author: mvantellingen

Dockerfile

@@ -12,7 +12,7 @@ USER node
 WORKDIR /app
 
 # Files required by pnpm install
-COPY --chown=node package.json pnpm-lock.yaml tsdown.config.js tsconfig.json /app/
+COPY --chown=node package.json pnpm-lock.yaml tsdown.config.js tsdown.server.config.js tsconfig.json /app/
 
 RUN pnpm install --frozen-lockfile
 

package.json

@@ -22,7 +22,7 @@
 	],
 	"scripts": {
 		"build": "tsdown",
-		"build:server": "tsdown src/server.ts --platform=node",
+		"build:server": "tsdown --config tsdown.server.config.js",
 		"check": "biome check && tsc",
 		"format": "biome check --fix",
 		"lint": "biome check",

tsdown.server.config.js

@@ -0,0 +1,15 @@
+import { defineConfig } from "tsdown";
+
+// Standalone server bundle (used by the Docker image).
+// Intentionally has no publint/dts: it's an executable bundle, not the
+// published package, so it doesn't need type declarations or package.json
+// export validation.
+export default defineConfig({
+	entry: ["src/server.ts"],
+	platform: "node",
+	format: ["esm"],
+	outDir: "dist",
+	clean: true,
+	splitting: false,
+	sourcemap: true,
+});