Bootstrap 4 DatePicke issue - datepicker

Question

I am using bootstrap 4, jQuery 3.3.1 and datepicker (http://www.eyecon.ro/bootstrap-datepicker/)
I have three issues:
The Calendar icon is not the size of the input box
When submit without selecting the date, bootstrap validation message not working.
Auto close is not working.
$(document).ready(function()
{
$('#depositeDate').datepicker({
"setDate": new Date(),
"autoclose": true
});
})
<div class="form-group row">
<label for="depositeDate" class="col-sm-4 col-form-label col-form-label-lg">Deposit Date</label>
<div class="col-sm-2 input-group date">
<input type="text" class=" text-input form-control" id ="depositeDate" placeholder="MM/DD/YYYY">
<div class="input-group-addon">
<i class="fas fa-calendar-alt fa-3x" style="color:RED"></i> </div>
<div class="invalid-feedback">
Please enter a valid Order Number.
</div>
</div>
</div>

Answer 1

The Calendar icon is not the size of the input box
The markup for input group addon is changed in Bootstrap 4.0 stable
<div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="basic-addon2">
<div class="input-group-append">
<span class="input-group-text" id="basic-addon2">#example.com</span>
</div>
</div>
Your code should be
<div class="input-group date" >
<input type="text" class="form-control" id ="depositeDate" placeholder="MM/DD/YYYY">
<div class="input-group-append">
<span class="input-group-text" id="basic-addon2"><span class="fa fa-calendar"></span></span>
</div>
</div>
3.Auto close is not working.
I don't see setting like "autoclose": true , we should explicitly call to close the datepicker.
.on('changeDate', function(ev) {
checkout.hide();
})

Answer 2

<div class="form-group row justify-content-center align-items-center">
<label for="depositeDate" class="col-sm-3 col-form-label">Deposit Date</label>
<div class="col-sm-3 input-group date" >
<input type="text" class="text-input form-control" id ="depositeDate" placeholder="MM/DD/YYYY">
<div class="input-group-addon" style="cursor: pointer;" onclick="$('#depositeDate').focus();">
<i class="fas fa-calendar-alt fa-2x"></i>
</div>
</div>
</div>

Answer 3

this code will do:
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.7.14/js/bootstrap-datetimepicker.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.7.14/css/bootstrap-datetimepicker.min.css">
<br>
<div class="container">
<div class="row">
<div class='col-sm-6'>
<div class="form-group">
<label for="Order number">Order number</label>
<input type="text" id="Order number" >
</div>
<div class="form-group">
<div class='input-group date' id='datetimepicker1'>
<label for="male">Deposit Date</label>
<input type='text' class="form-control" />
<span class="input-group-addon">
<span class="glyphicon glyphicon-calendar"></span>
</span>
</div>
</div>
</div>
</div>
</div>
<script>$(function() {
$('#datetimepicker1').datetimepicker();
});</script>
check out the fiddle:https://jsfiddle.net/rqy7L2do/