add dockerfile for coolify previews

Dockerfile_coolify

@@ -0,0 +1,31 @@
+FROM python:3.9-slim AS builder
+
+WORKDIR /monero-docs
+
+COPY . /monero-docs
+
+RUN pip install -r requirements.txt
+
+RUN mkdocs build
+
+FROM nginx:alpine
+
+COPY --from=builder /monero-docs/public /usr/share/nginx/html
+
+# Inline Nginx configuration
+RUN echo 'server { \
+    listen 80; \
+    root /usr/share/nginx/html; \
+    index index.html index.htm; \
+    error_page 404 /404.html; \
+    location = /404.html { \
+        internal; \
+    } \
+    location / { \
+        try_files $uri $uri/ =404; \
+    } \
+}' > /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]