You could do this by creating a custom widget. Something like this:

 // Automatic FlutterFlow imports\nimport '/backend/schema/structs/index.dart';\nimport '/flutter_flow/flutter_flow_theme.dart';\nimport '/flutter_flow/flutter_flow_util.dart';\nimport '/custom_code/widgets/index.dart'; // Imports other custom widgets\nimport '/custom_code/actions/index.dart'; // Imports custom actions\nimport '/flutter_flow/custom_functions.dart'; // Imports custom functions\nimport 'package:flutter/material.dart';\n// Begin custom widget code\n// DO NOT REMOVE OR MODIFY THE CODE ABOVE!\n\nclass CustomImageContainer extends StatefulWidget {\n  const CustomImageContainer({\n    Key? key,\n    this.width,\n    this.height,\n    required this.imagePath,\n  }) : super(key: key);\n\n  final double? width;\n  final double? height;\n  final String imagePath;\n\n  @override\n  _CustomImageContainerState createState() => _CustomImageContainerState();\n}\n\nclass _CustomImageContainerState extends State<CustomImageContainer> {\n  @override\n  Widget build(BuildContext context) {\n    return Center(\n      child: Container(\n        width: 80.0,\n        height: 80.0,\n        child: ClipRect(\n          child: Align(\n            alignment: Alignment.center,\n            child: FittedBox(\n              fit: BoxFit.cover,\n              child: SizedBox(\n                width: 90.0,\n                height: 90.0,\n                child: Image.network(\n                  widget.imagePath, \n                  fit: BoxFit.cover,\n                ),\n              ),\n            ),\n          ),\n        ),\n      ),\n    );\n  }\n}

FittedBox, with BoxFit.cover: to scale and crop the image to the specified dimensions, ensuring that the image is fitted and cropped to fill the available space without deforming it,
ClipRect and Align used to center and crop the part that exceeds the specified size.
widget.imagePath: is the path to the image that we have passed as a parameter to the widget.

box fit question