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>
(cherry picked from commit 0a0037c6fd)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Possibly a typo from reusing text from the ADD section.
Signed-off-by: Hugo Gabriel Eyherabide <hugogabriel.eyherabide@gmail.com>
(cherry picked from commit 86cbe28510)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Naming stages is the preferred method for using
multi-stage builds.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
(cherry picked from commit 5dd9bd4c2c)
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>
(cherry picked from commit ef414633d6)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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>
(cherry picked from commit bc58d655c0)
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>
(cherry picked from commit 16730a2ab6)
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>
(cherry picked from commit 824a9ce64b)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Fix 19 typos, grammatical errors and duplicated words.
These fixes have minimal impact on the code as these are either in the
doc files or in comments inside the code files.
Signed-off-by: Abdur Rehman <abdur_rehman@mentor.com>
Since CLI was moved to a separate repo, these references are incorrect.
Fixed with the help of sed script, verified manually.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Add note about host-dir in VOLUME
(cherry picked from commit f2fff9d913a8ab0436dd56033189a7c3713a59a2)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 8fd6547fc3eb67e7efa7efb007ae6a4494cd2bb3)
Signed-off-by: Tibor Vass <tibor@docker.com>
Also fixed some examples of using `docker build` to clarify that the
positional argument is a directory, not a file.
Also fixed some terminology. Dockerfiles contain instructions, not directives or
commands.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
Removes the build-args from the image history if they are in the
BuiltinAllowedBuildArgs map unless they are explicitly defined in an ARG
instruction.
Signed-off-by: Dave Tucker <dt@docker.com>
Sebastiaan van Stijn
eyherabh
Tonis Tiigi
dito
Maciej Kalisz
Hector S
Michael Irwin
Adrian Plata
Brandon Mitchell
Daniel Cassidy
Alex Mayer
Misty Stanley-Jones
Daniel Nephin
Sebastiaan van Stijn
squeegels
Patrick Lang
Mikhail Vasin
Abdur Rehman
John Mulhausen
Phil Estes
Frieder Bluemle
Rubens Figueiredo
Kir Kolyshkin
Valentin Lorentz
Slava Semushin
Elias Faxö
Foysal Iqbal
John Maguire
Dave Tucker