Add SQLite3 support

Dockerfile

@@ -3,7 +3,8 @@ FROM ubuntu:bionic
 RUN apt-get update && \
     apt-get -y upgrade && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install \
-        apache2 php7.2 libapache2-mod-php7.2 libcap2-bin curl
+        apache2 php7.2 libapache2-mod-php7.2 \
+        sqlite3 php-sqlite3 libcap2-bin curl
 
 RUN a2enmod php7.2