.
├── caddy                       # The directory name is the target image
│   └── Earthfile
├── openjdk
│   ├── cgradle                 # If the build image needs some other files, they will also be saved in this directory
│   ├── cmvn
│   └── Earthfile               # Earthfile is a file similar to Dockerfile, it is modular, it is very convenient to reuse code
│
│
├── udcs                        # udcs (user-defined commands) is a special directory where most common Earthfiles are stored
│   ├── Earthfile               # udcs/Earthfile stores general commands that do not depend on system os and language
│   ├── image                   # udcs/image stores the basic runtime or compile image of most programming languages
│   ├── language                # udcs/language stores special commands for specific languages
│   └── os                      # udcs/os stores special commands for specific system os
│
│
├── .github
│   └── workflows                   # The workflows directory stores job definitions for each docker image automated build
│       ├── alpine.yaml
│       ├── caddy.yaml
│       ├── confluence.yaml
│       ├── ddns.yaml
│       ├── demo.yaml
│       ├── idgen.yaml
│       ├── jira.yaml
│       ├── nginx-singlepage.yaml
│       ├── nodebuild.yaml
│       ├── openjdk.yaml
│       ├── poetbot.yaml
│       ├── s2h.yaml
│       └── ssh.yaml
└── LICENSE