docs/reference: reformat env-vars table, and simplify

No need to mention that the env-var may be removed at that point to keep
the description more to-the-point.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 879e0804a4)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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Sebastiaan van Stijn 2023-04-12 18:15:13 +02:00
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@ -123,19 +123,19 @@ the [installation](https://docs.docker.com/install/) instructions for your opera
The following list of environment variables are supported by the `docker` command The following list of environment variables are supported by the `docker` command
line: line:
| Variable | Description | | Variable | Description |
|:------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------| |:------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `DOCKER_API_VERSION` | Override the negotiated API version to use for debugging (e.g. `1.19`) | | `DOCKER_API_VERSION` | Override the negotiated API version to use for debugging (e.g. `1.19`) |
| `DOCKER_CERT_PATH` | Location of your authentication keys. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) | | `DOCKER_CERT_PATH` | Location of your authentication keys. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) |
| `DOCKER_CONFIG` | The location of your client configuration files. | | `DOCKER_CONFIG` | The location of your client configuration files. |
| `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry. | | `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry. |
| `DOCKER_CONTENT_TRUST` | When set Docker uses notary to sign and verify images. Equates to `--disable-content-trust=false` for build, create, pull, push, run. | | `DOCKER_CONTENT_TRUST` | When set Docker uses notary to sign and verify images. Equates to `--disable-content-trust=false` for build, create, pull, push, run. |
| `DOCKER_CONTEXT` | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`) | | `DOCKER_CONTEXT` | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`) |
| `DOCKER_DEFAULT_PLATFORM` | Default platform for commands that take the `--platform` flag. | | `DOCKER_DEFAULT_PLATFORM` | Default platform for commands that take the `--platform` flag. |
| `DOCKER_HIDE_LEGACY_COMMANDS` | When set, Docker hides "legacy" top-level commands (such as `docker rm`, and `docker pull`) in `docker help` output, and only `Management commands` per object-type (e.g., `docker container`) are printed. This may become the default in a future release, at which point this environment-variable is removed. | | `DOCKER_HIDE_LEGACY_COMMANDS` | When set, Docker hides "legacy" top-level commands (such as `docker rm`, and `docker pull`) in `docker help` output, and only `Management commands` per object-type (e.g., `docker container`) are printed. This may become the default in a future release. |
| `DOCKER_HOST` | Daemon socket to connect to. | | `DOCKER_HOST` | Daemon socket to connect to. |
| `DOCKER_TLS_VERIFY` | When set Docker uses TLS and verifies the remote. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) | | `DOCKER_TLS_VERIFY` | When set Docker uses TLS and verifies the remote. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) |
| `BUILDKIT_PROGRESS` | Set type of progress output (`auto`, `plain`, `tty`) when [building](build.md) with [BuildKit backend](https://docs.docker.com/build/buildkit/). Use plain to show container output (default `auto`). | | `BUILDKIT_PROGRESS` | Set type of progress output (`auto`, `plain`, `tty`) when [building](build.md) with [BuildKit backend](https://docs.docker.com/build/buildkit/). Use plain to show container output (default `auto`). |
Because Docker is developed using Go, you can also use any environment Because Docker is developed using Go, you can also use any environment
variables used by the Go runtime. In particular, you may find these useful: variables used by the Go runtime. In particular, you may find these useful: