nginx.conf

server {
    # staging server is listening on the port 8080
    listen 8080;
    server_name _;
    root /usr/share/nginx/html/;

    # rule redirecting to fr or en regarding the browser preferences
    location = / {
        rewrite_by_lua '
        for lang in (ngx.var.http_accept_language .. ","):gmatch("([^,]*),") do
            if string.sub(lang, 0, 2) == "en" then
            ngx.redirect("/en/")
            end
            if string.sub(lang, 0, 2) == "fr" then
            ngx.redirect("/fr/")
            end
        end
        ngx.redirect("/en/")
        ';
    }

    # This is needed to allow reloading in the app when not on the base url as our app is an SPA
    location /en {
        try_files $uri$args /en/index.html;
    }

    location /fr {
        try_files $uri$args /fr/index.html;
    }

}