The `DEBIAN_FRONTEND` environment variable is used to control the interface by which debconf questions are presented to the user (see [`man 7 debconf`][1]). In `DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y`, the `DEBIAN_FRONTEND` environment variable is only set for the `apt-get update` command which does not ask debconf questions, and will not affect the `apt-get install` command where these questions are actually asked. It should be the other way around.
[1]: https://manpages.debian.org/debconf.7.html
Signed-off-by: Murukesh Mohanan <murukesh.mohanan@gmail.com>
(cherry picked from commit 7227c0145d)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Co-authored-by: Sebastiaan van Stijn <github@gone.nl>
Signed-off-by: Stefan Scherer <stefan.scherer@docker.com>
(cherry picked from commit 119c7fb84d)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
cc @thaJeztah docker/docker.github.io#13680
Signed-off-by: Peter Dave Hello <hsu@peterdavehello.org>
(cherry picked from commit 417f97605f)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This replaces the use of bash where suitable, to allow easier copy/pasting
of shell examples without copying the prompt or process output.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 47ba76afb1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- rename "experimental" to "labs"
- rephrase recommendation for picking a version
- clarify that the "labs" channel provides a superset of the "stable" channel.
- remove "External implementation features" section, because it overlapped
with the "syntax" section.
- removed `:latest` from the "stable" channel (generally not recommended)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 30359cbdb7)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- update some examples to show the BuildKit output
- remove some wording about "images" being used for the build cache
- add a link to the `--cache-from` section
- added a link to "scanning your image with `docker scan`"
- updated link to "push your image"
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 17a9eb60e3)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
These examples were really outdated, so linking to other sections
in the documentation instead.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 22b14dac8e)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- use "console" for code-hints, to make process output distinguishable
from the commands that are executed
- use a consistent prompt for powershell examples
- minor changes in wording around "build context" to reduce confusion
with `docker context`
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 5dd7a28267)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The `ENV key value` form can be ambiguous, for example, the following defines
a single env-variable (`ONE`) with value `"TWO= THREE=world"`:
ENV ONE TWO= THREE=world
While we cannot deprecate/remove that syntax (as it would break existing
Dockerfiles), we should reduce exposure of the format in our examples.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
1. Fix dead URL to [Dockerfile best practices](https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#leverage-build-cache).
2. Add missing information about cache invalidation by `COPY`. It works in the same way as in the case of `ADD`. Informing only about the `ADD`s behavior is misleading as one can infer that these two directives differ in this regard.
3. Add missing info on RUN cache invalidation by COPY
Signed-off-by: Maciej Kalisz <maciej.d.kalisz@gmail.com>
This link was broken when generating the documentation (due to
a bug in Jekyll not converting wrapped internal links)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- add code-fences with code-hints so that the right hightlighting is applied
- replace `*` for `-` in bullet-lists for consistency with other parts of the
documentation.
- reduced number of "notes", either by combining some, or by changing some
to regular text.
- removed "line numbers" from some examples, because there's only four lines,
which should not need really need line numbers.
- reformat some notes to our new format
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Unlike GitHub's web-UI, the "rouge" hightlighter used in our
online documentation is case-sensitive. As a result, code-blocks
having the Dockerfile (uppercase) code-hint were not highlighted.
This changes those to use lowercase, which is supported by both.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Murukesh Mohanan
Stefan Scherer
Govind Rai
Takuya Noguchi
jlecordier
Peter Dave Hello
Sebastiaan van Stijn
Tianon Gravi
Kyle
Eric Engestrom
eyherabh
Tonis Tiigi
dito
Maciej Kalisz
Hector S
Sebastiaan van Stijn
Adrian Plata
Brandon Mitchell
Michael Irwin
Daniel Cassidy
Alex Mayer
Misty Stanley-Jones
Daniel Nephin
squeegels
Patrick Lang
Mikhail Vasin