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@@ -1,34 +1,24 @@
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<!--[metadata]>
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+++
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-title = "Introduction to the CLI"
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-description = "Introduction to the CLI"
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+title = "CLI Environment Variables"
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+description = "CLI Environment Variables"
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keywords = ["fig, composition, compose, docker, orchestration, cli, reference"]
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+aliases = ["/compose/reference/overview/"]
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[menu.main]
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parent = "smn_compose_cli"
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-weight=-2
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+weight=-1
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+++
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<![end-metadata]-->
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-# Introduction to the CLI
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-
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-This section describes the subcommands you can use with the `docker-compose` command. You can run subcommand against one or more services. To run against a specific service, you supply the service name from your compose configuration. If you do not specify the service name, the command runs against all the services in your configuration.
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-
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-
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-## Commands
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-
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-* [docker-compose Command](docker-compose.md)
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-* [CLI Reference](index.md)
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-
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-
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-## Environment Variables
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+# CLI Environment Variables
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Several environment variables are available for you to configure the Docker Compose command-line behaviour.
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Variables starting with `DOCKER_` are the same as those used to configure the
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Docker command-line client. If you're using `docker-machine`, then the `eval "$(docker-machine env my-docker-vm)"` command should set them to their correct values. (In this example, `my-docker-vm` is the name of a machine you created.)
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-### COMPOSE\_PROJECT\_NAME
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+## COMPOSE\_PROJECT\_NAME
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Sets the project name. This value is prepended along with the service name to the container container on start up. For example, if you project name is `myapp` and it includes two services `db` and `web` then compose starts containers named `myapp_db_1` and `myapp_web_1` respectively.
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@@ -36,14 +26,14 @@ Setting this is optional. If you do not set this, the `COMPOSE_PROJECT_NAME`
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defaults to the `basename` of the project directory. See also the `-p`
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[command-line option](docker-compose.md).
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-### COMPOSE\_FILE
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+## COMPOSE\_FILE
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Specify the file containing the compose configuration. If not provided,
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Compose looks for a file named `docker-compose.yml` in the current directory
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and then each parent directory in succession until a file by that name is
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found. See also the `-f` [command-line option](docker-compose.md).
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-### COMPOSE\_API\_VERSION
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+## COMPOSE\_API\_VERSION
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The Docker API only supports requests from clients which report a specific
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version. If you receive a `client and server don't have same version error` using
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@@ -63,20 +53,20 @@ If you run into problems running with this set, resolve the mismatch through
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upgrade and remove this setting to see if your problems resolve before notifying
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support.
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-### DOCKER\_HOST
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+## DOCKER\_HOST
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Sets the URL of the `docker` daemon. As with the Docker client, defaults to `unix:///var/run/docker.sock`.
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-### DOCKER\_TLS\_VERIFY
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+## DOCKER\_TLS\_VERIFY
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When set to anything other than an empty string, enables TLS communication with
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the `docker` daemon.
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-### DOCKER\_CERT\_PATH
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+## DOCKER\_CERT\_PATH
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Configures the path to the `ca.pem`, `cert.pem`, and `key.pem` files used for TLS verification. Defaults to `~/.docker`.
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-### COMPOSE\_HTTP\_TIMEOUT
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+## COMPOSE\_HTTP\_TIMEOUT
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Configures the time (in seconds) a request to the Docker daemon is allowed to hang before Compose considers
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it failed. Defaults to 60 seconds.
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