• Launch AMI Image - Amazon Linux AMI 2018.03.0 (HVM) (Not Amazon Linux 2 AMI (HVM))
• Install Apache 2.0 and PHP 7.2

> sudo su
> yum install httpd24 php72

• List other installed PHP packets

> yum list installed | grep php

php72.x86_64                         7.2.11-1.6.amzn1              @amzn-updates
php72-cli.x86_64                     7.2.11-1.6.amzn1              @amzn-updates
php72-common.x86_64                  7.2.11-1.6.amzn1              @amzn-updates
php72-json.x86_64                    7.2.11-1.6.amzn1              @amzn-updates
php72-process.x86_64                 7.2.11-1.6.amzn1              @amzn-updates
php72-xml.x86_64                     7.2.11-1.6.amzn1              @amzn-updates

• Look for other update and install other updates as needed

>  yum search php72

Loaded plugins: priorities, update-motd, upgrade-helper
===================================== N/S matched: php72 =====================================
php72.x86_64 : PHP scripting language for creating dynamic web sites
php72-bcmath.x86_64 : A module for PHP applications for using the bcmath library
php72-cli.x86_64 : Command-line interface for PHP
php72-common.x86_64 : Common files for PHP
php72-dba.x86_64 : A database abstraction layer module for PHP applications
php72-dbg.x86_64 : The interactive PHP debugger
php72-devel.x86_64 : Files needed for building PHP extensions
php72-embedded.x86_64 : PHP library for embedding in applications
php72-enchant.x86_64 : Enchant spelling extension for PHP applications
php72-fpm.x86_64 : PHP FastCGI Process Manager
php72-gd.x86_64 : A module for PHP applications for using the gd graphics library
php72-gmp.x86_64 : A module for PHP applications for using the GNU MP library
php72-imap.x86_64 : A module for PHP applications that use IMAP
php72-intl.x86_64 : Internationalization extension for PHP applications
php72-json.x86_64 : JavaScript Object Notation extension for PHP
php72-ldap.x86_64 : A module for PHP applications that use LDAP
php72-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
php72-mysqlnd.x86_64 : A module for PHP applications that use MySQL databases
php72-odbc.x86_64 : A module for PHP applications that use ODBC databases
php72-opcache.x86_64 : The Zend OPcache
php72-pdo.x86_64 : A database access abstraction module for PHP applications
php72-pdo-dblib.x86_64 : PDO driver Microsoft SQL Server and Sybase databases
php72-pecl-apcu.x86_64 : APC User Cache
php72-pecl-apcu-devel.x86_64 : APCu developer files (header)
php72-pecl-igbinary.x86_64 : Replacement for the standard PHP serializer
php72-pecl-igbinary-devel.x86_64 : Igbinary developer files (header)
php72-pecl-imagick.x86_64 : Extension to create and modify images using ImageMagick
php72-pecl-imagick-devel.x86_64 : imagick extension developer files (header)
php72-pecl-mcrypt.x86_64 : Bindings for the libmcrypt library
php72-pecl-memcache.x86_64 : Extension to work with the Memcached caching daemon
php72-pecl-memcached.x86_64 : Extension to work with the Memcached caching daemon
php72-pecl-oauth.x86_64 : PHP OAuth consumer extension
php72-pecl-redis.x86_64 : Extension for communicating with the Redis key-value store
php72-pecl-ssh2.x86_64 : Bindings for the libssh2 library
php72-pecl-uuid.x86_64 : Universally Unique Identifier extension for PHP
php72-pgsql.x86_64 : A PostgreSQL database module for PHP
php72-process.x86_64 : Modules for PHP script using system process interfaces
php72-pspell.x86_64 : A module for PHP applications for using pspell interfaces
php72-recode.x86_64 : A module for PHP applications for using the recode library
php72-snmp.x86_64 : A module for PHP applications that query SNMP-managed devices
php72-soap.x86_64 : A module for PHP applications that use the SOAP protocol
php72-tidy.x86_64 : Standard PHP module provides tidy library support
php72-xml.x86_64 : A module for PHP applications which use XML
php72-xmlrpc.x86_64 : A module for PHP applications which use the XML-RPC protocol

  Name and summary matches only, use "search all" for everything.

• In addition, Dokuwiki requires the following php packages
  • php72-mbstring - PDF Export
  • php72-sqlite3 - Table Edit

> yum install php72-mbstring
> yum install php72-sqlite3

• Edit /etc/httpd/conf/httpd.conf to restrict access

<Directory /var/www/html/dokuwiki>        
    order deny,allow        
    allow from all        
</Directory>        

<LocationMatch "/(data|conf|bin|inc)/">        
    order allow,deny        
    deny from all        
    satisfy all        
</LocationMatch>