Every commit to master and unstable is built with GitHub actions on MacOS (JDK 1.8.0) and Linux (OpenJDK8). If you would like to run Apalache in Windows, use a docker image. Check the Docker manual and the section on Using a docker image for details.
As Apalache is using Microsoft Z3 as a backend SMT solver, the required memory largely depends on Z3. We recommend to allocate at least 4GB of memory for the tool.