slot/.devcontainer/server/devcontainer.json

{
  "name": "OpenJDK21",
  "image": "mcr.microsoft.com/openjdk/jdk:21-ubuntu",
  "features": {
    "ghcr.io/devcontainers/features/java:1": {
      "installMaven": "true"
    },
    "ghcr.io/devcontainers/features/git:1": {}
  },
  "customizations": {
    "jetbrains": {
      "backend": "IntelliJ"
    }
  },
  "forwardPorts": [8080],
  "workspaceFolder": "/workspace"
}