docs: remove some references to obsolete docker versions

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
2020-10-26 18:30:01 +01:00
parent a0cacb0887
commit 6a02a51c99
7 changed files with 15 additions and 36 deletions

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@ -2216,8 +2216,6 @@ are stored currently).
When the health status of a container changes, a `health_status` event is
generated with the new status.
The `HEALTHCHECK` feature was added in Docker 1.12.
## SHELL
@ -2342,8 +2340,6 @@ environment variable expansion semantics could be modified.
The `SHELL` instruction can also be used on Linux should an alternate shell be
required such as `zsh`, `csh`, `tcsh` and others.
The `SHELL` feature was added in Docker 1.12.
## External implementation features
This feature is only available when using the [BuildKit](#buildkit) backend.