diff --git a/Dockerfile b/Dockerfile
index 99fb2ae..136a800 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,26 +3,29 @@ ARG NODE_VERSION=20.15.0
 FROM node:${NODE_VERSION}-alpine AS build
 WORKDIR /app
 
-# Install deps first for better caching
+# Install deps with cache leverage
 COPY package*.json ./
 RUN npm ci || npm install
 
 # Build
 COPY . .
 ENV NODE_ENV=production
-# Limit Node heap during build to avoid OOM on small builders
 ENV NODE_OPTIONS=--max-old-space-size=512
 RUN npm run build
 
 # ---- Runtime (Nginx) ----
 FROM nginx:1.27-alpine AS runtime
+# Install curl for healthcheck
+RUN apk add --no-cache curl
 # Remove default site content
 RUN rm -rf /usr/share/nginx/html/*
-# SPA config (history fallback)
+# SPA config
 COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
 # Static assets
 COPY --from=build /app/dist /usr/share/nginx/html
+
 EXPOSE 80
 HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
-  CMD wget -qO- http://localhost/ >/dev/null 2>&1 || exit 1
+  CMD curl -fsS http://localhost/ >/dev/null || exit 1
+
 CMD ["nginx", "-g", "daemon off;"]
diff --git a/README.md b/README.md
index 93ea358..58ca0e2 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,12 @@
-# Reading Goal App (Dockerized)
+# Reading Goal App (Dockerized — healthcheck fix)
 
-React + Vite + Tailwind. Dates use **DD/MM/YYYY** and the calendar week starts on **Monday**.
-Includes a multi-stage Dockerfile: Node build → Nginx runtime with SPA fallback.
+This bundle installs `curl` in the Nginx runtime and uses a curl-based HEALTHCHECK.
+- Internal port: **80**
+- SPA fallback via Nginx
+- Build heap capped to avoid OOM
 
-## Local Dev
-```bash
-npm install
-npm run dev
-```
-
-## Production Build (local)
-```bash
-npm run build
-npm run preview
-```
-
-## Docker (build locally)
+## Build & Run
 ```bash
 docker build -t reading-goal-app:latest .
 docker run -d --name reading-goal-app -p 8080:80 --restart unless-stopped reading-goal-app:latest
-# Open http://localhost:8080
 ```
-
-## Deploy in Coolify
-- Deployment Type: **Dockerfile**
-- Dockerfile path: `Dockerfile`
-- **Internal Port**: `80` (Nginx)
-- No extra start command needed.
-
-The multi-stage image builds the app (`vite build`) and serves static files via Nginx with history API fallback.
diff --git a/docker/nginx.conf b/docker/nginx.conf
index 3a2f3e9..c24ac42 100644
--- a/docker/nginx.conf
+++ b/docker/nginx.conf
@@ -1,15 +1,14 @@
 server {
   listen 80;
+  listen [::]:80;
   server_name _;
   root /usr/share/nginx/html;
   index index.html;
 
-  # Serve files if they exist, else fallback to index.html (SPA)
   location / {
     try_files $uri $uri/ /index.html;
   }
 
-  # Static assets (cache-friendly)
   location ~* \.(?:js|css|png|jpg|jpeg|gif|svg|ico|woff2?)$ {
     expires 30d;
     add_header Cache-Control "public, immutable";