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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>
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‎docs/reference/commandline/cli.md‎

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@@ -123,19 +123,19 @@ the [installation](https://docs.docker.com/install/) instructions for your opera
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The following list of environment variables are supported by the `docker` command
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line:
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| Variable | Description |
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|:------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------|
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| `DOCKER_API_VERSION` | Override the negotiated API version to use for debugging (e.g. `1.19`) |
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| `DOCKER_CERT_PATH` | Location of your authentication keys. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) |
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| `DOCKER_CONFIG` | The location of your client configuration files. |
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| `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry. |
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| `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. |
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| `DOCKER_CONTEXT` | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`) |
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| `DOCKER_DEFAULT_PLATFORM` | Default platform for commands that take the `--platform` flag. |
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| `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. |
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| `DOCKER_HOST` | Daemon socket to connect to. |
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| `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) |
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| `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`). |
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| Variable | Description |
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|:------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `DOCKER_API_VERSION` | Override the negotiated API version to use for debugging (e.g. `1.19`) |
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| `DOCKER_CERT_PATH` | Location of your authentication keys. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) |
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| `DOCKER_CONFIG` | The location of your client configuration files. |
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| `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry. |
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| `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. |
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| `DOCKER_CONTEXT` | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`) |
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| `DOCKER_DEFAULT_PLATFORM` | Default platform for commands that take the `--platform` flag. |
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| `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. |
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| `DOCKER_HOST` | Daemon socket to connect to. |
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| `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) |
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| `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`). |
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Because Docker is developed using Go, you can also use any environment
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variables used by the Go runtime. In particular, you may find these useful:

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