diff --git a/.env.sample b/.env.sample
index 5d13230..e99fc96 100644
--- a/.env.sample
+++ b/.env.sample
@@ -42,6 +42,31 @@ SECRET_MEDIAWIKI_SECRET_KEY_VERSION=v1 # length=64
 ## OpenID Connect
 # OPENID_ENABLED=1
 # COMPOSE_FILE="compose.yml:compose.openid.yml"
-# OPENID_KEYCLOAK_URL="https://keycloak.local:8080/auth/realms/acme/"
+# OPENID_KEYCLOAK_URL="https://keycloak.local:8080/realms/acme/"
 # OPENID_CLIENT_ID="mediawiki"
 # SECRET_OPENID_CLIENT_SECRET_VERSION=v1
+
+## WikiMarkdown
+#MARKDOWN_ENABLED=1
+
+## MobileFrontend
+#MOBILEFRONTEND_ENABLED=1
+
+## MsUpload
+#MSU_ENABLED=1
+
+## PageForms
+#PAGEFORMS_ENABLED=1
+
+## PageSchemas
+#PAGESCHEMAS_ENABLED=1
+
+## SemanticMediaWiki
+#SEMANTICMW_ENABLED=1
+
+## WikiMarkdown
+#MARKDOWN_ENABLED=1
+
+## Tweeki skin
+#TWEEKI_ENABLED=0
+
diff --git a/LocalSettings.php.tmpl b/LocalSettings.php.tmpl
index a5c35ba..41a2833 100644
--- a/LocalSettings.php.tmpl
+++ b/LocalSettings.php.tmpl
@@ -5,7 +5,6 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 	exit;
 }
 
-
 ## Uncomment this to disable output compression
 # $wgDisableOutputCompression = true;
 
@@ -116,15 +115,27 @@ $wgGroupPermissions['*']['read'] = false;
 $wgGroupPermissions['*']['read'] = true;
 {{ end }}
 
-## Default skin: you can change the default skin. Use the internal symbolic
-## names, ie 'vector', 'monobook':
-$wgDefaultSkin = "vector";
-
 # Enabled skins.
 # The following skins were automatically enabled:
 wfLoadSkin( 'MonoBook' );
 wfLoadSkin( 'Timeless' );
 wfLoadSkin( 'Vector' );
+wfLoadSkin( 'MinervaNeue' );
+
+## Default skin: you can change the default skin. Use the internal symbolic
+## names, ie 'vector', 'monobook':
+
+{{ if eq (env "TWEEKI_ENABLED") "1" }}
+wfLoadSkin( 'Tweeki' );
+$wgDefaultSkin = "tweeki";
+{{ else }}
+$wgDefaultSkin = "vector";
+{{ end }}
+
+{{ if eq (env "MOBILEFRONTEND_ENABLED") "1" }}
+wfLoadExtension( 'MobileFrontend' );
+$wgDefaultMobileSkin = 'minerva';
+{{ end }}
 
 # Enabled extensions. Most of the extensions are enabled by adding
 # wfLoadExtensions('ExtensionName');
@@ -143,23 +154,6 @@ $wgDefaultUserOptions['visualeditor-enable'] = 1;
 
 $wgVisualEditorAllowLossySwitching = false;
 
-$wgVirtualRestConfig['modules']['parsoid'] = [
-	// URL to the Parsoid instance - use port 8142 if you use the Debian package - the parameter 'URL' was first used but is now deprecated (string)
-	'url' => 'http://parsoid:8000/',
-	// Parsoid "domain" (string, optional) - MediaWiki >= 1.26
-	'domain' => 'localhost',
-	// Parsoid "prefix" (string, optional) - deprecated since MediaWiki 1.26, use 'domain'
-	'prefix' => 'localhost',
-	// Forward cookies in the case of private wikis (string or false, optional)
-	'forwardCookies' => true,
-	// request timeout in seconds (integer or null, optional)
-	'timeout' => null,
-	// Parsoid HTTP proxy (string or null, optional)
-	'HTTPProxy' => null,
-	// whether to parse URL as if they were meant for RESTBase (boolean or null, optional)
-	'restbaseCompat' => null,
-];
-
 {{ if eq (env "SAML_ENABLED") "1" }}
 wfLoadExtension( 'PluggableAuth' );
 
@@ -214,6 +208,30 @@ $wgSMTP = [
 ];
 {{ end }}
 
+{{ if eq (env "MSU_ENABLED") "1" }}
+wfLoadExtension( 'MsUpload' );
+$wgAllowJavaUploads = true; // Solves problem with Office 2007 and newer files (docx, xlsx, etc.)
+{{ end }}
+
+{{ if eq (env "PAGEFORMS_ENABLED") "1" }}
+wfLoadExtension( 'PageForms' );
+{{ end }}
+
+{{ if eq (env "PAGESCHEMAS_ENABLED") "1" }}
+wfLoadExtension( 'PageSchemas' );
+{{ end }}
+
+{{ if eq (env "SEMANTICMW_ENABLED") "1" }}
+wfLoadExtension( 'SemanticMediaWiki' );
+enableSemantics( '{{ env "DOMAIN" }}' );
+{{ end }}
+
+{{ if eq (env "MARKDOWN_ENABLED") "1" }}
+wfLoadExtension( 'WikiMarkdown' );
+$wgAllowMarkdownExtra = true; // allows usage of Parsedown Extra
+$wgAllowMarkdownExtended = true; // allows usage of Parsedown Extended
+{{ end }}
+
 $wgFileExtensions = array(
     'png', 'gif', 'jpg', 'jpeg', 'doc', 'xls', 'mpp', 'pdf', 'ppt', 'tiff',
     'bmp', 'docx', 'xlsx', 'pptx', 'ps', 'odt', 'ods', 'odp', 'odg'
diff --git a/abra.sh b/abra.sh
index 2d9b513..52c49d9 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,8 +1,8 @@
-export LOCAL_SETTINGS_CONF_VERSION=v6
+export LOCAL_SETTINGS_CONF_VERSION=v20
 export HTACCESS_CONF_VERSION=v1
-export ENTRYPOINT_CONF_VERSION=v3
-export COMPOSER_LOCAL_CONF_VERSION=v1
-export PHP_INI_VERSION=v1
+export ENTRYPOINT_CONF_VERSION=v19
+export COMPOSER_LOCAL_CONF_VERSION=v5
+export PHP_INI_VERSION=v4
 
 export SAML_ENTRYPOINT_CONF_VERSION=v3
 
diff --git a/compose.yml b/compose.yml
index 18fd7c4..840b227 100644
--- a/compose.yml
+++ b/compose.yml
@@ -63,14 +63,6 @@ services:
     networks:
       - internal
 
-  parsoid:
-    image: thenets/parsoid:0.11.0
-    hostname: parsoidserver
-    networks:
-      - internal
-    environment:
-      PARSOID_DOMAIN_localhost: http://app:80/api.php
-
 volumes:
   mariadb:
   mediawiki_images:
diff --git a/composer.local.json.tmpl b/composer.local.json.tmpl
index 6a93b46..6027113 100644
--- a/composer.local.json.tmpl
+++ b/composer.local.json.tmpl
@@ -1,4 +1,9 @@
 {
+{{ if eq (env "SEMANTICMW_ENABLED") "1" }}
+  "require": {
+    "mediawiki/semantic-media-wiki": "^4.1.0"
+  },
+{{ end }}
   "extra": {
     "merge-plugin": {
       "include": [
diff --git a/entrypoint.sh.tmpl b/entrypoint.sh.tmpl
index 992706e..72ff37c 100755
--- a/entrypoint.sh.tmpl
+++ b/entrypoint.sh.tmpl
@@ -17,6 +17,9 @@ composer_install() {
 	set -eu
 
 	cd /var/www/html/ && composer update && composer install
+
+    # SMW needs this; some other extensions brought in by composer might as well.
+    php /var/www/html/maintenance/update.php --quick
 }
 
 init_db() {
@@ -50,6 +53,7 @@ init_db() {
 }
 
 init_extensions() {
+
 	if [ ! -d /var/www/html/extensions/PluggableAuth ]; then
 		git clone --depth 1 -b REL1_39 \
 			https://gerrit.wikimedia.org/r/p/mediawiki/extensions/PluggableAuth \
@@ -71,12 +75,67 @@ init_extensions() {
 				/var/www/html/extensions/OpenIDConnect
 		fi
 	fi
+
+	if [ -n "${MOBILEFRONTEND_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/extensions/MobileFrontend ]; then
+			git clone --depth 1 -b REL1_39 \
+				https://github.com/wikimedia/mediawiki-extensions-MobileFrontend.git \
+				/var/www/html/extensions/MobileFrontend
+		fi
+	fi
+
+	if [ -n "${MSU_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/extensions/MsUpload ]; then
+			git clone --depth 1 -b REL1_39 \
+				https://gerrit.wikimedia.org/r/mediawiki/extensions/MsUpload \
+				/var/www/html/extensions/MsUpload
+		fi
+	fi
+
+	if [ -n "${PAGEFORMS_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/extensions/PageForms ]; then
+			git clone --depth 1 -b REL1_39 \
+				https://gerrit.wikimedia.org/r/mediawiki/extensions/PageForms \
+				/var/www/html/extensions/PageForms
+		fi
+	fi
+
+	if [ -n "${PAGESCHEMAS_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/extensions/PageSchemas ]; then
+			git clone --depth 1 -b REL1_39 \
+				https://gerrit.wikimedia.org/r/mediawiki/extensions/PageSchemas \
+				/var/www/html/extensions/PageSchemas
+		fi
+	fi
+
+	if [ -n "${MARKDOWN_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/extensions/WikiMarkdown ]; then
+			git clone --depth 1 \
+				https://github.com/kuenzign/WikiMarkdown \
+				/var/www/html/extensions/WikiMarkdown
+		fi
+	fi
+
 }
 
+init_skins() {
+
+	if [ -n "${TWEEKI_ENABLED-}" ]; then
+		if [ ! -d /var/www/html/skins/Tweeki ]; then
+			git clone --depth 1 \
+				https://github.com/thaider/Tweeki \
+				/var/www/html/skins/Tweeki
+		fi
+	fi
+
+}
+
+
 main() {
 	set -eu
 
 	init_extensions
+	init_skins
 	init_composer
 	composer_install
 	init_db
diff --git a/php.ini.tmpl b/php.ini.tmpl
index 586b69b..fe05f3a 100644
--- a/php.ini.tmpl
+++ b/php.ini.tmpl
@@ -2,3 +2,9 @@ upload_max_filesize = 10M
 post_max_size = 10M
 max_execution_time = 7200
 max_file_uploads = 1000
+
+{{ if eq (env "MEDIAWIKI_DEBUG") "0" }}
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
+{{ else }}
+error_reporting = E_ALL
+{{ end }}