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# docker compose
```text
docker compose [-f <arg>...] [options] [COMMAND] [ARGS...]
```
<!---MARKER_GEN_START-->
Define and run multi-container applications with Docker
### Subcommands
| Name | Description |
|:--------------------------------|:----------------------------------------------------------------------------------------|
| [`attach`](compose_attach.md) | Attach local standard input, output, and error streams to a service's running container |
| [`build`](compose_build.md) | Build or rebuild services |
| [`config`](compose_config.md) | Parse, resolve and render compose file in canonical format |
| [`cp`](compose_cp.md) | Copy files/folders between a service container and the local filesystem |
| [`create`](compose_create.md) | Creates containers for a service |
| [`down`](compose_down.md) | Stop and remove containers, networks |
| [`events`](compose_events.md) | Receive real time events from containers |
| [`exec`](compose_exec.md) | Execute a command in a running container |
| [`export`](compose_export.md) | Export a service container's filesystem as a tar archive |
| [`images`](compose_images.md) | List images used by the created containers |
| [`kill`](compose_kill.md) | Force stop service containers |
| [`logs`](compose_logs.md) | View output from containers |
| [`ls`](compose_ls.md) | List running compose projects |
| [`pause`](compose_pause.md) | Pause services |
| [`port`](compose_port.md) | Print the public port for a port binding |
| [`ps`](compose_ps.md) | List containers |
| [`pull`](compose_pull.md) | Pull service images |
| [`push`](compose_push.md) | Push service images |
| [`restart`](compose_restart.md) | Restart service containers |
| [`rm`](compose_rm.md) | Removes stopped service containers |
| [`run`](compose_run.md) | Run a one-off command on a service |
| [`scale`](compose_scale.md) | Scale services |
| [`start`](compose_start.md) | Start services |
| [`stats`](compose_stats.md) | Display a live stream of container(s) resource usage statistics |
| [`stop`](compose_stop.md) | Stop services |
| [`top`](compose_top.md) | Display the running processes |
| [`unpause`](compose_unpause.md) | Unpause services |
| [`up`](compose_up.md) | Create and start containers |
| [`version`](compose_version.md) | Show the Docker Compose version information |
| [`wait`](compose_wait.md) | Block until containers of all (or specified) services stop. |
| [`watch`](compose_watch.md) | Watch build context for service and rebuild/refresh containers when files are updated |
### Options
| Name | Type | Default | Description |
|:-----------------------|:--------------|:--------|:----------------------------------------------------------------------------------------------------|
| `--all-resources` | `bool` | | Include all resources, even those not used by services |
| `--ansi` | `string` | `auto` | Control when to print ANSI control characters ("never"\|"always"\|"auto") |
| `--compatibility` | `bool` | | Run compose in backward compatibility mode |
| `--dry-run` | `bool` | | Execute command in dry run mode |
| `--env-file` | `stringArray` | | Specify an alternate environment file |
| `-f`, `--file` | `stringArray` | | Compose configuration files |
| `--parallel` | `int` | `-1` | Control max parallelism, -1 for unlimited |
| `--profile` | `stringArray` | | Specify a profile to enable |
| `--progress` | `string` | `auto` | Set type of progress output (auto, tty, plain, json, quiet) |
| `--project-directory` | `string` | | Specify an alternate working directory<br>(default: the path of the, first specified, Compose file) |
| `-p`, `--project-name` | `string` | | Project name |
<!---MARKER_GEN_END-->
## Examples
### Use `-f` to specify the name and path of one or more Compose files
Use the `-f` flag to specify the location of a Compose configuration file.
#### Specifying multiple Compose files
You can supply multiple `-f` configuration files. When you supply multiple files, Compose combines them into a single
configuration. Compose builds the configuration in the order you supply the files. Subsequent files override and add
to their predecessors.
For example, consider this command line:
```console
$ docker compose -f docker-compose.yml -f docker-compose.admin.yml run backup_db
```
The `docker-compose.yml` file might specify a `webapp` service.
```yaml
services:
webapp:
image: examples/web
ports:
- "8000:8000"
volumes:
- "/data"
```
If the `docker-compose.admin.yml` also specifies this same service, any matching fields override the previous file.
New values, add to the `webapp` service configuration.
```yaml
services:
webapp:
build: .
environment:
- DEBUG=1
```
When you use multiple Compose files, all paths in the files are relative to the first configuration file specified
with `-f`. You can use the `--project-directory` option to override this base path.
Use a `-f` with `-` (dash) as the filename to read the configuration from stdin. When stdin is used all paths in the
configuration are relative to the current working directory.
The `-f` flag is optional. If you don’t provide this flag on the command line, Compose traverses the working directory
and its parent directories looking for a `compose.yaml` or `docker-compose.yaml` file.
#### Specifying a path to a single Compose file
You can use the `-f` flag to specify a path to a Compose file that is not located in the current directory, either
from the command line or by setting up a `COMPOSE_FILE` environment variable in your shell or in an environment file.
For an example of using the `-f` option at the command line, suppose you are running the Compose Rails sample, and
have a `compose.yaml` file in a directory called `sandbox/rails`. You can use a command like `docker compose pull` to
get the postgres image for the db service from anywhere by using the `-f` flag as follows:
```console
$ docker compose -f ~/sandbox/rails/compose.yaml pull db
```
### Use `-p` to specify a project name
Each configuration has a project name. Compose sets the project name using
the following mechanisms, in order of precedence:
- The `-p` command line flag
- The `COMPOSE_PROJECT_NAME` environment variable
- The top level `name:` variable from the config file (or the last `name:`
from a series of config files specified using `-f`)
- The `basename` of the project directory containing the config file (or
containing the first config file specified using `-f`)
- The `basename` of the current directory if no config file is specified
Project names must contain only lowercase letters, decimal digits, dashes,
and underscores, and must begin with a lowercase letter or decimal digit. If
the `basename` of the project directory or current directory violates this
constraint, you must use one of the other mechanisms.
```console
$ docker compose -p my_project ps -a
NAME SERVICE STATUS PORTS
my_project_demo_1 demo running
$ docker compose -p my_project logs
demo_1 | PING localhost (127.0.0.1): 56 data bytes
demo_1 | 64 bytes from 127.0.0.1: seq=0 ttl=64 time=0.095 ms
```
### Use profiles to enable optional services
Use `--profile` to specify one or more active profiles
Calling `docker compose --profile frontend up` starts the services with the profile `frontend` and services
without any specified profiles.
You can also enable multiple profiles, e.g. with `docker compose --profile frontend --profile debug up` the profiles `frontend` and `debug` is enabled.
Profiles can also be set by `COMPOSE_PROFILES` environment variable.
### Configuring parallelism
Use `--parallel` to specify the maximum level of parallelism for concurrent engine calls.
Calling `docker compose --parallel 1 pull` pulls the pullable images defined in the Compose file
one at a time. This can also be used to control build concurrency.
Parallelism can also be set by the `COMPOSE_PARALLEL_LIMIT` environment variable.
### Set up environment variables
You can set environment variables for various docker compose options, including the `-f`, `-p` and `--profiles` flags.
Setting the `COMPOSE_FILE` environment variable is equivalent to passing the `-f` flag,
`COMPOSE_PROJECT_NAME` environment variable does the same as the `-p` flag,
`COMPOSE_PROFILES` environment variable is equivalent to the `--profiles` flag
and `COMPOSE_PARALLEL_LIMIT` does the same as the `--parallel` flag.
If flags are explicitly set on the command line, the associated environment variable is ignored.
Setting the `COMPOSE_IGNORE_ORPHANS` environment variable to `true` stops docker compose from detecting orphaned
containers for the project.
Setting the `COMPOSE_MENU` environment variable to `false` disables the helper menu when running `docker compose up`
in attached mode. Alternatively, you can also run `docker compose up --menu=false` to disable the helper menu.
### Use Dry Run mode to test your command
Use `--dry-run` flag to test a command without changing your application stack state.
Dry Run mode shows you all the steps Compose applies when executing a command, for example:
```console
$ docker compose --dry-run up --build -d
[+] Pulling 1/1
✔ DRY-RUN MODE - db Pulled 0.9s
[+] Running 10/8
✔ DRY-RUN MODE - build service backend 0.0s
✔ DRY-RUN MODE - ==> ==> writing image dryRun-754a08ddf8bcb1cf22f310f09206dd783d42f7dd 0.0s
✔ DRY-RUN MODE - ==> ==> naming to nginx-golang-mysql-backend 0.0s
✔ DRY-RUN MODE - Network nginx-golang-mysql_default Created 0.0s
✔ DRY-RUN MODE - Container nginx-golang-mysql-db-1 Created 0.0s
✔ DRY-RUN MODE - Container nginx-golang-mysql-backend-1 Created 0.0s
✔ DRY-RUN MODE - Container nginx-golang-mysql-proxy-1 Created 0.0s
✔ DRY-RUN MODE - Container nginx-golang-mysql-db-1 Healthy 0.5s
✔ DRY-RUN MODE - Container nginx-golang-mysql-backend-1 Started 0.0s
✔ DRY-RUN MODE - Container nginx-golang-mysql-proxy-1 Started Started
```
From the example above, you can see that the first step is to pull the image defined by `db` service, then build the `backend` service.
Next, the containers are created. The `db` service is started, and the `backend` and `proxy` wait until the `db` service is healthy before starting.
Dry Run mode works with almost all commands. You cannot use Dry Run mode with a command that doesn't change the state of a Compose stack such as `ps`, `ls`, `logs` for example.
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