Resource constrained VM appliance for testing

When you create a new virtual machine in VirtualBox, you can specify the amount of RAM and number of virtual CPU cores that the virtual machine can use. You can also specify the size of the virtual disk, which determines the maximum amount of disk space available to the virtual machine.

Here are the steps to create a resource-limited virtual machine in VirtualBox:

1. Launch VirtualBox and click the "New" button to create a new virtual machine.
2. Give the virtual machine a name and select the type and version of the operating system you want to install.
3. In the "System" section, click the "Processor" tab and set the number of virtual CPU cores to 2.
4. In the "System" section, click the "Motherboard" tab and set the amount of RAM to the desired amount.
5. In the "Storage" section, click the "Create a virtual hard disk now" button and select the size of the virtual disk.
6. Click the "Create" button to create the virtual machine.
7. Start the virtual machine and install the operating system.

After you have created the virtual machine, you can monitor its resource usage to make sure that it is not exceeding the specified limits.