test github actions

.github/workflows/start_mongo.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+MONGODB=$1
+
+mongodb_dir=${PWD}/mongodb-linux-x86_64-${MONGODB}
+mkdir $mongodb_dir/data
+$mongodb_dir/bin/mongod --dbpath $mongodb_dir/data --logpath $mongodb_dir/mongodb.log --fork
+mongo --eval 'db.version();'    # Make sure mongo is awake