Package GraalVM CE or Mandrel toolchain
Someone managed to patch GraalVM to work on Alpine 3 years ago: https://github.com/oracle/graal/issues/2825#issuecomment-737205345. But maybe it’s already fixed by oracle/graal#3141?
Mandrel is a downstream distribution of the GraalVM community edition that is smaller and uses standard OpenJDK (i.e. doesn’t need patched Oracle JDK as GraalVM does).