Install script for Nginx/Dokuwiki on Ubuntu 20.04

install-nginx-php7-dokuwiki.sh

#!/bin/sh

die() {
  echo "ERROR: $1"
  exit 1
}
[ $(whoami) = "root" ] || die "This script must be run as root"

echo "Please go to https://download.dokuwiki.org/, create a download archive, and paste the download link here:"
read -p ">" DOWNLOAD_LINK

echo -n "Please enter your server FQDN here : "
read -p "($HOSTNAME) >" SERVER_NAME

if [ ${SERVER_NAME} = "" ]; then
  SERVER_NAME=$HOSTNAME
fi

apt install nginx php php-xml || die "Could not install php/nginx"
cd /var/www || die "/var/www/ directory does not exist"

[ -d dokuwiki ] && die "There is already a /var/www/dokuwiki directory. Please delete it before re-running this script."

wget ${DOWNLOAD_LINK} --output-document=/tmp/dokuwiki.tgz
tar xzfp /tmp/dokuwiki.tgz || die "Could not extract the dokuwiki archive."

echo "
server {
  server_name ${SERVER_NAME};
  root /var/www/dokuwiki;
  index index.php index.html index.html;

  error_log /var/log/nginx/dokuwiki.error.log;
  access_log /var/log/nginx/dokuwiki.access.log;
#  rewrite_log on;
#  server_tokens off;
#  add_header X-Content-Type-Options nosniff;
#  add_header X-XSS-Protection '1; mode=block';

  location / {
    index doku.php;
    try_files $uri $uri/ @dokuwiki;
  }
  
  location ~ /(data|conf|bin|inc|vendor)/ {
    deny all;
  }
  
  location ~ ^/lib.*\.(gif|png|ico|jpg)$ {
    expires 30d;
  }

  location ^~ /conf/ { return 403; }
  location ^~ /data/ { return 403; }

  location @dokuwiki {
    rewrite ^/_media/(.*) /lib/exe/fetch.php?media=$1 last;
    rewrite ^/_detail/(.*) /lib/exe/detail.php?media=$1 last;
    rewrite ^/_export/([^/]+)/(.*) /doku.php?do=export_$1&id=$2 last;
    rewrite ^/(.*) /doku.php?id=$1&$args last;
  }

  location ~ [^/]\.php(/|$) {
    include snippets/fastcgi-php.conf;
    # fill in correct php version here.
    fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
#    fastcgi_split_path_info ^(.+?\.php)(/.*)$;
#    if (!-f $document_root$fastcgi_script_name) {
#        return 404;
#    }
#    fastcgi_index index.php;
    include fastcgi_params;
  }
}
" > /etc/nginx/sites-available/${SERVER_NAME}.conf
ln -s /etc/nginx/sites_available/${SERVER_NAME}.conf /etc/nginx/sites-enabled/${SERVER_NAME}.conf

systemctl enable nginx
systemctl start nginx