diff --git a/roundcubemail/Dockerfile b/roundcubemail/Dockerfile
index 5e22381..fe01cfb 100644
--- a/roundcubemail/Dockerfile
+++ b/roundcubemail/Dockerfile
@@ -19,16 +19,15 @@ RUN set -ex; \
 	; \
 	\
 	debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
-	docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-png-dir=/usr --with-jpeg-dir=/usr; \
-	docker-php-ext-configure ldap --with-libdir="lib/$debMultiarch"; \
-	docker-php-ext-install \
+	docker-php-ext-configure gd; \
+	docker-php-ext-configure ldap; \
+	docker-php-ext-install -j$(nproc) \
 		exif \
 		gd \
 		intl \
 		ldap \
 		pdo_mysql \
 		pdo_pgsql \
-		pdo_sqlite \
 		zip \
 	; \
 	pecl install imagick; \