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feat: Lint Dockerfiles #171
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imincik
suggested changes
Jan 7, 2021
| @@ -1,19 +1,26 @@ | |||
| FROM ubuntu:20.04 as build | |||
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| RUN apt-get update \ | |||
| && apt-get install -y curl python3-pip \ | |||
| && apt-get install --assume-yes --no-install-recommends curl=7.68.0-1ubuntu2.4 python3-pip=20.0.2-5ubuntu1.1 \ | |||
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Apt package versions as above
| @@ -1,6 +1,8 @@ | |||
| FROM ubuntu:20.04 | |||
| ENV DEBIAN_FRONTEND noninteractive | |||
| RUN apt update && apt install -y python3 && rm -rf /var/lib/apt/lists/* | |||
| RUN apt-get update \ | |||
| && apt-get install --assume-yes --no-install-recommends python3=3.8.2-0ubuntu2 \ | |||
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@l0b0 , are you sure we need to specify apt packages versions here ? The only distribution upgrades are bug fixes. I think this is not necessary.
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Pro locking versions:
- Makes it less likely to break things arbitrarily. Even OS package patches sometimes sneak in functional changes which impact systems. Reproducibility is a huge win.
Cons:
- Even if we install fixed versions of the top level packages, we might get updated versions of their dependencies. Apt AFAIK does not have a lockfile mechanism like NPM and Poetry, meaning that locking all the package dependencies is a bit more of a chore.
- Dependabot does not yet patch Dockerfile package installs.
Once Dependabot supports apt-get within Dockerfiles that fixes both of the above - we could just lock the package dependencies in the apt-get command once and Dependabot would take care of keeping them up to date. So on balance I agree for now. Documented.
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| FROM ubuntu:20.04 | ||
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| ENTRYPOINT ["/opt/.venv/bin/python", "/opt/task.py"] | ||
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| ENV DEBIAN_FRONTEND noninteractive | ||
| RUN apt-get update && apt-get install -y python3 && rm -rf /var/lib/apt/lists/* | ||
| RUN apt-get update \ | ||
| && apt-get install --assume-yes --no-install-recommends python3=3.8.2-0ubuntu2 \ |
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Apt package versions as above
Ignore rule to force setting specific package versions since - Ubuntu should only be receiving non-breaking patches, - we don't want the overhead of having to follow up on every package upgrade manually (see dependabot/dependabot-core#2129), and - locking only the top level packages means we'd still get arbitrary versions of their dependencies.
imincik
approved these changes
Jan 10, 2021
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