httpd.conf

ServerTokens Prod
ServerRoot /var/www

# Pull the port number from the PORT environment variable.
Listen ${PORT}

LoadModule authn_file_module modules/mod_authn_file.so
LoadModule authn_core_module modules/mod_authn_core.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule authz_core_module modules/mod_authz_core.so
LoadModule access_compat_module modules/mod_access_compat.so
LoadModule auth_basic_module modules/mod_auth_basic.so
LoadModule reqtimeout_module modules/mod_reqtimeout.so
LoadModule filter_module modules/mod_filter.so
LoadModule mime_module modules/mod_mime.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule env_module modules/mod_env.so
LoadModule headers_module modules/mod_headers.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule version_module modules/mod_version.so
LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
LoadModule unixd_module modules/mod_unixd.so
LoadModule status_module modules/mod_status.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule dir_module modules/mod_dir.so
LoadModule alias_module modules/mod_alias.so
LoadModule negotiation_module modules/mod_negotiation.so

<IfModule unixd_module>
    User apache
    Group apache
</IfModule>

ServerSignature Off
ServerName localhost

<Directory />
    AllowOverride none
    Require all denied
</Directory>

DocumentRoot "/opt/hello-php/htdocs"
<Directory "/opt/hello-php/htdocs">
    Options Indexes
    AllowOverride None
    Require all granted
</Directory>

<IfModule dir_module>
    DirectoryIndex index.php index.html
</IfModule>

<Files ".ht*">
    Require all denied
</Files>

LogLevel info
ErrorLog "|/bin/cat"

<IfModule log_config_module>
    LogFormat "%h %l %u %t \"%r\" %>s %b" common
    CustomLog "|/bin/cat" common
</IfModule>

<IfModule mime_module>
    TypesConfig /etc/apache2/mime.types
    AddType application/x-gzip .tgz
    AddEncoding x-compress .Z
    AddEncoding x-gzip .gz .tgz
    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz
</IfModule>

<IfModule mime_magic_module>
    MIMEMagicFile /etc/apache2/magic
</IfModule>

IncludeOptional /etc/apache2/conf.d/*.conf