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What if "apt-get" becomes an instruction?

See original GitHub issue

Inside a multi-line RUN instruction, lack of \ will lead missing of command and no exception will be raised.

Here is an example Dockerfile

FROM ubuntu:xenial

RUN apt-get install -y curl && \
    curl --silent --location https://deb.nodesource.com/setup_4.x | bash - && \
    apt-get install -y nodejs
    apt-get install -y build-essentials
    echo Hello

Now, echo is taken as an instruction, but apt-get is lost.

If apt-get can also be taken as an instruction, I can deal with this Dockerfile syntax error manually. If not, an exception is expected.

Issue Analytics

State:
Created 4 years ago
Comments:6 (6 by maintainers)

Top GitHub Comments

1reaction

limjcstcommented, Jan 9, 2020

This issue may be related to https://github.com/containerbuildsystem/dockerfile-parse/blob/47740325fb821af04c4c94cd4d59701cbcd3f194/dockerfile_parse/parser.py#L243

as apt-get does not match ^\s*(\w+)\s.

How about replace the regex with r'^\s*(\S+)\s+(.*)$'? In this way, Dockerfile error is left for the user to deal with.

0reactions

MartinBasticommented, Jan 10, 2020

That’s possible, at least all new code must pass flake8 testing, we have enabled stickler-CI to cover new things.

Fixed via #92

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