refactor: migrate from nixpacks to multi-stage Dockerfile with Nginx for Hugo site deployment

Dockerfile

@@ -0,0 +1,37 @@
+# Stage 1: Build the Hugo site
+FROM klakegg/hugo:0.112.3-alpine AS builder
+
+# Set the working directory in the container
+WORKDIR /src
+
+# Copy the content of the project to the working directory
+COPY . .
+
+# Build the Hugo site
+RUN hugo --minify
+
+# Stage 2: Serve the site with Nginx
+FROM nginx:1.25-alpine
+
+# Copy the built static site from the builder stage
+COPY --from=builder /src/public /usr/share/nginx/html
+
+# Optional: Add custom Nginx configuration optimized for static sites
+RUN echo 'server {\
+    listen 80;\
+    server_name _;\
+    root /usr/share/nginx/html;\
+    index index.html;\
+    gzip on;\
+    gzip_types text/plain text/css application/javascript image/svg+xml;\
+    error_page 404 /404.html;\
+    location ~* \.(css|js|jpg|jpeg|png|gif|ico|svg)$ {\
+        expires 30d;\
+    }\
+}' > /etc/nginx/conf.d/default.conf
+
+# Expose port 80
+EXPOSE 80
+
+# Start Nginx in foreground
+CMD ["nginx", "-g", "daemon off;"]

nixpacks.toml

@@ -1,20 +0,0 @@
-# Explicitly set the provider to 'static' to help with detection
-[provider]
-name = "static"
-website = "https://gohugo.io/"
-
-[phases.setup]
-aptPkgs = ["hugo"]
-
-[ phases.build ]
-cmds = ["hugo --minify"]
-
-[ environment ]
-HUGO_VERSION = "0.112.3"
-
-[[ nixpacks.included_files ]]
-paths = ["/public"]
-
-# Add a custom plan to ensure the static provider is recognized
-[plan]
-providers = ["static"]