add mysql dependency + fix routing

Dockerfile

@@ -10,6 +10,7 @@ RUN { \
 	echo 'opcache.revalidate_freq=2'; \
 	echo 'opcache.fast_shutdown=1'; \
 	} > /etc/php/7.3/embed/conf.d/opcache-recommended.ini
+
 # https://wordpress.org/support/article/editing-wp-config-php/#configure-error-logging
 RUN { \
 # https://www.php.net/manual/en/errorfunc.constants.php
@@ -31,6 +32,9 @@ ENV WORDPRESS_VERSION 5.2.3
 ENV WORDPRESS_SHA1 5efd37148788f3b14b295b2a9bf48a1a467aa303
 
 RUN set -ex; \
+	apt-get update && apt-get -y install --no-install-recommends \
+	php7.3-mysql \
+	&& rm -rf /var/lib/apt/lists/* ; \
 	curl -o wordpress.tar.gz -fSL "https://wordpress.org/wordpress-${WORDPRESS_VERSION}.tar.gz"; \
 	echo "$WORDPRESS_SHA1 *wordpress.tar.gz" | sha1sum -c -; \
 # upstream tarballs include ./wordpress/ so this gives us /usr/src/wordpress
@@ -42,21 +46,18 @@ RUN set -ex; \
 # port used by the listener in config.json
 EXPOSE 8080
 
-# application setup
-
-# launch Unit
+# launch and configure Unit
 RUN \
-    [ -f /var/www/html/index.php ] || { \
+	-f /var/www/html/index.php ] || { \
 	  touch /var/www/html/index.php /var/www/html/index.php.remove; \
 	} \
 	&& unitd --control unix:/var/run/control.unit.sock \
-  # upload the app config to Unit
 	&& curl -X PUT --data-binary \
 	'{ \
 	  "listeners": { "*:8080": { "pass": "routes" } }, \
 	  "routes": [ \
 	    { "match": { "uri": "*.php" }, "action": { "pass": "applications/direct_php" } }, \
-    { "action": { "share": "/var/www/html" } }, \
+	    { "match": { "uri": "!*/" }, "action": { "share": "/var/www/html" } }, \
 	    { "action": { "pass": "applications/index_php" } } \
 	  ], \
 	  "applications": { \