Saving an image or file to MongoDB GridFS using Lua

Install the following packages

$: sudo apt install lua5.3
$: sudo apt install luarocks
$: sudo apt install libbson-dev
$: sudo apt install libmongoc-dev
$: sudo apt install liblua5.3-dev
$: sudo luarocks install lua-mongo

Then save image like below:

	local mongo = require 'mongo'
	local client = mongo.Client('mongodb://127.0.0.1')
	local gridfs = client:getGridFS('GridFS')
	local f = gridfs:createFileFrom('/home/u1/tmp/image.png', {filename='/home/u1/tmp/image.png'})
	f:save()

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