CHANGE: Last iteration with Gemini. It's a bit dumb :D

Dockerfile

@@ -1,8 +1,13 @@
-# Use the official Nginx image from Docker Hub
+# Use the official lightweight Nginx image
 FROM nginx:alpine
 
-# Copy index.html to the default Nginx public folder
-COPY index.html /usr/share/nginx/html/
+# Set the working directory inside the container
+WORKDIR /usr/share/nginx/html
 
-# Listen on port 80
+# Copy all project files from the build context to the working directory
+# The '.' means 'copy everything from the current folder (my-portfolio)'
+# into the WORKDIR of the container. This is the key fix.
+COPY . .
+
+# Expose port 80 to the Docker host
 EXPOSE 80