Copy assets as part of npm postbuild

Dockerfile

@@ -11,10 +11,6 @@ RUN npm run build
 FROM node:16-slim
 
 COPY --from=builder /app/dist/ /app/
-COPY --from=builder /app/package.json /app/
-COPY --from=builder /app/package-lock.json /app/
-COPY --from=builder /app/static/ /app/static/
-COPY --from=builder /app/templates/ /app/templates/
 
 WORKDIR /app
 

package.json

@@ -7,6 +7,7 @@
   "scripts": {
     "start": "node dist/index.js",
     "build": "npx tsc",
+    "postbuild": "cp -a package.json package-lock.json templates static dist",
     "lint": "eslint -c .eslintrc --max-warnings 0 'src/**/*.ts'",
     "watch": "npx tsc --watch",
     "test": "npx mocha -r ts-node/register test/**/*.test.ts",