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1.4. Image Builder system requirements

The osbuild-composer tool underlying Image Builder performs a number of potentially insecure and unsafe actions while creating the system images. For this reason, use a virtual machine to run Image Builder.

The environment where Image Builder runs, for example the virtual machine, must meet requirements listed in the following table.

Tabla 1.2. Image Builder system requirements

ParameterMinimal Required Value

System type

A dedicated virtual machine


2 cores


4 GiB

Disk space

20 GiB

Access privileges

Administrator level (root)


Connectivity to Internet


There is no support for creating images on virtual machine directly installed on UEFI systems.