mirror of https://github.com/docker/docs.git
Replaced curly quotes in command samples with regular quotes
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@ -49,7 +49,7 @@ For more on image layers (and how Docker builds and stores images), see
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### Create ephemeral containers
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The image defined by your `Dockerfile` should generate containers that are as
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ephemeral as possible. By "ephemeral," we mean that the container can be stopped
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ephemeral as possible. By “ephemeral,” we mean that the container can be stopped
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and destroyed, then rebuilt and replaced with an absolute minimum set up and
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configuration.
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@ -191,8 +191,8 @@ CMD ["--help"]
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### Don't install unnecessary packages
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To reduce complexity, dependencies, file sizes, and build times, avoid
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installing extra or unnecessary packages just because they might be "nice to
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have." For example, you don’t need to include a text editor in a database image.
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installing extra or unnecessary packages just because they might be “nice to
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have.” For example, you don’t need to include a text editor in a database image.
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### Decouple applications
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@ -358,7 +358,7 @@ Probably the most common use-case for `RUN` is an application of `apt-get`.
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Because it installs packages, the `RUN apt-get` command has several gotchas to
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look out for.
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Avoid `RUN apt-get upgrade` and `dist-upgrade`, as many of the "essential"
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Avoid `RUN apt-get upgrade` and `dist-upgrade`, as many of the “essential”
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packages from the parent images cannot upgrade inside an
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[unprivileged container](/engine/reference/run.md#security-configuration). If a package
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contained in the parent image is out-of-date, contact its maintainers. If you
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@ -714,7 +714,7 @@ like `RUN groupadd -r postgres && useradd --no-log-init -r -g postgres postgres`
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> Consider an explicit UID/GID
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>
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> Users and groups in an image are assigned a non-deterministic UID/GID in that
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> the "next" UID/GID is assigned regardless of image rebuilds. So, if it’s
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> the “next” UID/GID is assigned regardless of image rebuilds. So, if it’s
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> critical, you should assign an explicit UID/GID.
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> Due to an [unresolved bug](https://github.com/golang/go/issues/13548) in the
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@ -727,7 +727,7 @@ like `RUN groupadd -r postgres && useradd --no-log-init -r -g postgres postgres`
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Avoid installing or using `sudo` as it has unpredictable TTY and
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signal-forwarding behavior that can cause problems. If you absolutely need
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functionality similar to `sudo`, such as initializing the daemon as `root` but
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running it as non-`root`), consider using ["gosu"](https://github.com/tianon/gosu).
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running it as non-`root`), consider using [“gosu”](https://github.com/tianon/gosu).
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Lastly, to reduce layers and complexity, avoid switching `USER` back and forth
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frequently.
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@ -761,7 +761,7 @@ builds arbitrary user software written in that language within the
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Images built from `ONBUILD` should get a separate tag, for example:
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`ruby:1.9-onbuild` or `ruby:2.0-onbuild`.
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Be careful when putting `ADD` or `COPY` in `ONBUILD`. The "onbuild" image
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Be careful when putting `ADD` or `COPY` in `ONBUILD`. The “onbuild” image
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fails catastrophically if the new build's context is missing the resource being
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added. Adding a separate tag, as recommended above, helps mitigate this by
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allowing the `Dockerfile` author to make a choice.
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@ -780,4 +780,4 @@ These Official Repositories have exemplary `Dockerfile`s:
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* [Dockerfile Reference](/engine/reference/builder.md)
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* [More about Base Images](baseimages.md)
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* [More about Automated Builds](/docker-hub/builds/)
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* [Guidelines for Creating Official Repositories](/docker-hub/official_repos/)
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* [Guidelines for Creating Official Repositories](/docker-hub/official_repos/)
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