fix: add space between path and "in" in errors
rename: Dockerfile -> Containerfile
Go helpers for reading and writing files in the XDG Base Directories.
xdg.WriteSysConfig([]byte("some default config"), "myapp", "config.yaml")
xdg.WriteUserConfig([]byte("some user config"), "myapp/config.yaml")
xdg.WriteState([]byte("some log file"), "myapp", "logs", "errors.log")
data, err := xdg.ReadConfig("myapp", "config.yaml")
data, err := xdg.ReadCache("myapp", "subdir", "filename")