Source code for contree_sdk.docker.kw_user

"""`USER name[:group]` - run subsequent commands as the given user."""

from __future__ import annotations

from dataclasses import dataclass
from typing import ClassVar

from .context import AsyncBuildContext, BuildContext
from .keyword import DockerKeyword



[docs]
@dataclass(frozen=True, repr=False)
class UserKeyword(DockerKeyword):
    NAME: ClassVar[str] = "USER"
    spec: str = ""

    def __repr__(self) -> str:
        return f"USER {self.spec}"


[docs]
    @classmethod
    def parse(cls, args_text: str) -> UserKeyword:
        raw = args_text.strip()
        if not raw:
            raise ValueError("USER requires a name")
        return cls(spec=raw)



[docs]
    def serialize(self) -> str:
        return f"USER {self.spec}"



[docs]
    def execute(self, ctx: BuildContext) -> None:
        ctx.user = ctx.substitute(self.spec)



[docs]
    async def execute_async(self, ctx: AsyncBuildContext) -> None:
        ctx.user = ctx.substitute(self.spec)