# Functions
CopyDetachable is similar to io.Copy but support a detach key sequence to break out.
ExecCmd executes a command with args and returns its output as a string along with an error, if any.
ExecCmdWithStdStreams execute a command with the specified standard streams.
RunUnderSystemdScope adds the specified pid to a systemd scope.
StatusToExitCode converts wait status code to an exit code.
# Structs
DetachError is special error which returned in case of container detach.