Use the pymysql library to connect to the db

scripts/custom.config.sh

@@ -29,7 +29,7 @@ if [ -f "${EHP_SERVER_INI}" ]; then
   DB_NAME=geomag_operations
   DB_USER=$(get_ehp_server_ini 'mysql_web_absolutes_user=');
   DB_PASS=$(get_ehp_server_ini 'mysql_web_absolutes_password=');
-  export DATABASE_URL="mysql://${DB_USER}:${DB_PASS}@${DB_HOST}/${DB_NAME}";
+  export DATABASE_URL="mysql+pymysql://${DB_USER}:${DB_PASS}@${DB_HOST}/${DB_NAME}";
 fi
 
 export OPENID_CLIENT_ID=${OPENID_CLIENT_ID:-""}