unicorn-components/src/components/ui/button-file/button-file.component.html

<a target="_blank" href="https://getunicorn.io"><img src="https://bitbucket-assetroot.s3.amazonaws.com/c/photos/2017/Jul/07/2615006260-5-nitsnetsstudios-ondemand-UNI_avatar.png" align="left"></a>

<uni-button (click)="onClick()" [iconRight]="iconRight" [color]="color" [icon]="icon" [label]="label" [sublabel]="sublabel"
    [size]="size" [disabled]="disabled"></uni-button>
<input type="file" (change)="fileChange.emit($event.target.value)" [accept]="fileType || null">