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dc0fbbf7aa
The three shipped compose files forwarded the variable bare, so every
`docker compose` command on a default .env printed "variable is not set".
Default it to the 500 MiB that .env.example documents, like the other
limits, and add a guard test that rejects any bare ${VAR} in compose files.
Fixes #6619
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Alexandre Teixeira <general@alexandreteixeira.dev>
29 lines
1.0 KiB
Python
29 lines
1.0 KiB
Python
"""Every variable a shipped compose file forwards must carry a default.
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A bare ``${VAR}`` makes ``docker compose`` print "variable is not set" on every
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command for a default ``.env`` (#6619), which greets fresh installs with a
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warning that looks like a misconfiguration.
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"""
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import re
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from pathlib import Path
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import pytest
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ROOT = Path(__file__).resolve().parents[1]
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COMPOSE_FILES = sorted(ROOT.glob("docker-compose*.yml")) + sorted((ROOT / "docker").glob("*.yml"))
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# ${VAR} with no ``:-``/``-``/``:?``/``?`` modifier.
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BARE_VAR = re.compile(r"\$\{([A-Za-z_][A-Za-z0-9_]*)\}")
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@pytest.mark.parametrize("path", COMPOSE_FILES, ids=lambda p: p.relative_to(ROOT).as_posix())
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def test_compose_variables_have_defaults(path):
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bare = [
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f"{path.name}:{lineno}: ${{{name}}}"
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for lineno, line in enumerate(path.read_text(encoding="utf-8").splitlines(), 1)
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if not line.lstrip().startswith("#")
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for name in BARE_VAR.findall(line)
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]
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assert not bare, "compose variables without a default:\n" + "\n".join(bare)
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