slot/.devcontainer/devcontainer.json

{
  "name": "Java 21 Dev Container",
  "image": "mcr.microsoft.com/openjdk/jdk:21-ubuntu",
  "settings": {
    "java.home": "/usr/lib/jvm/msopenjdk-21-amd64"
  },
  "features": {
    "ghcr.io/devcontainers/features/java:1": {
      "installMaven": "true"
    }
  },
  "customizations": {
    "jetbrains": {
      "backend": "IntelliJ"
    }
  },
  "workspaceFolder": "/workspace"
}