FROM nginx:alpine

# Copy static files
COPY index.html /usr/share/nginx/html/
COPY images/ /usr/share/nginx/html/images/

# Custom nginx config for SPA
RUN echo 'server { \
    listen 80; \
    server_name _; \
    root /usr/share/nginx/html; \
    index index.html; \
    \
    location / { \
        try_files $uri $uri/ /index.html; \
    } \
    \
    # Cache static assets \
    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ { \
        expires 1y; \
        add_header Cache-Control "public, immutable"; \
    } \
    \
    # Security headers \
    add_header X-Frame-Options "SAMEORIGIN" always; \
    add_header X-Content-Type-Options "nosniff" always; \
    add_header X-XSS-Protection "1; mode=block" always; \
}' > /etc/nginx/conf.d/default.conf

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]