Docker Composer

A library to interact with docker-compose V2 from a python Program. All commands and parameters are exposed as python classes and attributes to allow for full auto-completion of its parameters with IDEs that support it.

Runtime footprint: This library is stdlib-only (zero third-party runtime dependencies).

Install

pip install docker-composer

Usage

The main class is docker_composer.DockerCompose. Its parameters are all options from docker-compose.

Each docker-compose command has a corresponding function, e.g. DockerCompose.run or DockerCompose.scale. Their arguments again mirror the options of the corresponding command.

The resulting object has a call function. It takes arbitrary strings as input, as well as all keyword arguments from subprocess.run, and returns a subprocess.CompletedProcess

from docker_composer import DockerCompose


base = DockerCompose(file="docker-compose.yml", verbose=True)
base.run(detach=True, workdir="/tmp").call("app")
base.run(workdir="/tmp").call("app", "/bin/bash", "-l")

# /tmp $ ls /.dockerenv
# /.dockerenv
# /tmp $ exit

process = base.ps(all=True).call(capture_output=True)
print(process.stdout.encode("UTF-8"))
#          Name                      Command           State    Ports
# -------------------------------------------------------------------
# myapp_app_70fd8b786b76   myapp --start-server        Exit 0        
# myapp_app_6ac3db4e1b55   myapp --client              Exit 0

Develop

Development Setup

When developing, the _utils module is available for generating the docker_composer module from the docker composeCLI help output. This is not required for normal package usage.

uv sync --group dev
uv run poe generate

Coding Standards

Type	Package	Comment
Linter	`ruff`	Also for auto-formatted modules
Logging	`logging`
Packaging	`uv`
Tests	`pytest`
Typing	`mypy`	Type all methods
Imports	`ruff`

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Publisher: python.yml on schollm/docker-composer

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