diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..3be2309
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,4 @@
+node_modules
+dist
+.git
+*.log
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..77b685a
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,23 @@
+# ---- Build stage ----
+FROM node:20-alpine AS build
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+# VITE_API_BASE_URL is intentionally left unset: nginx.conf proxies /api/*
+# to the backend container, so the built app can keep using relative
+# same-origin requests (see src/api/client.js).
+RUN npm run build
+
+# ---- Serve stage ----
+FROM nginx:alpine
+WORKDIR /usr/share/nginx/html
+
+RUN rm -rf ./*
+COPY --from=build /app/dist/ .
+COPY nginx.conf /etc/nginx/nginx.conf
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]
diff --git a/nginx.conf b/nginx.conf
new file mode 100644
index 0000000..d4aa62c
--- /dev/null
+++ b/nginx.conf
@@ -0,0 +1,40 @@
+events {}
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    # Excel/CSV catalog uploads (see /api/upload/*) can exceed nginx's 1m default.
+    client_max_body_size 20m;
+
+    gzip on;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml text/javascript image/svg+xml;
+
+    server {
+        listen 80;
+        server_name localhost;
+
+        # Backend API, proxied to the FastAPI container on the same Docker
+        # network. proxy_pass uses a variable + Docker's embedded DNS
+        # (127.0.0.11) so the backend's address is re-resolved per request
+        # instead of cached once at nginx startup - otherwise nginx would
+        # keep hitting a stale IP after the backend container restarts.
+        resolver 127.0.0.11 valid=30s;
+        location /api/ {
+            set $backend_upstream "http://backend:8000";
+            proxy_pass $backend_upstream;
+            proxy_http_version 1.1;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        location / {
+            root   /usr/share/nginx/html;
+            index  index.html index.htm;
+            # This line forces Nginx to pass routing back to React Router
+            try_files $uri $uri/ /index.html;
+        }
+    }
+}