Agent skill

Atmos Container

by cloudposse in cloudposse/atmos

Atmos container components: components.container, Docker Compose migration, build/run/push/pull/up/down/list/ps/logs/exec, stack-scoped persistent containers, container workflow steps, compositions…

Apache-2.0Auto-check: notesDevOps & Cloud

Install Atmos Container

skills CLI
$ npx skills add cloudposse/atmos --skill atmos-container -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install cloudposse/atmos atmos-container --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/cloudposse/atmos.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent-skills/skills/atmos-container .claude/skills/atmos-container && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
atmos-container
GitHub stars
1.4k
Token cost
~1.3k tokens
SKILL.md length
538 words
Files
1
Skills in repo
70
Repo updated
First seen
Licence
Apache-2.0

At a glance

Atmos container components: components.container, Docker Compose migration, build/run/push/pull/up/down/list/ps/logs/exec, stack-scoped persistent containers, container workflow steps, compositions…

  • Works in 6 steps: Inventory Compose services and split… → Move shared .env values into stack vars,… → Use composition: so former Compose… → …
  • Tasks that involve Containers
  • SKILL.md covers Related Skills, Component Shape, Commands and Workflow Steps, plus 2 more sections
  • Calls docker

What it does

Atmos Container is an agent skill from cloudposse/atmos. Atmos container components: components.container, Docker Compose migration, build/run/push/pull/up/down/list/ps/logs/exec, stack-scoped persistent containers, container workflow steps, compositions, and hooks

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in DevOps & Cloud, covering Containers. It works with Docker. The repository describes itself as: Atmos is the open-source runtime for infrastructure — it builds, authenticates, and ships Terraform, OpenTofu, Packer, Ansible, Kubernetes, Helm, and containers the same way on… The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Containers

Example prompts

  • “Use the atmos-container skill to atmo container components: components.container, Docker Compose migration…”
  • “/atmos-container”

Requirements

  • Docker

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Inventory Compose services and split long-lived services into separate container components.
  2. Move shared .env values into stack vars, component env, declared secrets, or !secret
  3. Use composition: so former Compose services validate and run as one system.
  4. Replace docker compose up/down/logs/exec/ps with the matching atmos container commands.
  5. Use workflow container, wait, wait-all, and explicit dependencies for startup order
  6. Prefer first-class components.container for Atmos-managed services. Keep a native Compose

What it can do on your machine

Read from SKILL.md and the folder at commit 36726ae. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • docker

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use docker, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Atmos Container loads about 1.3k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 538 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~56
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:102
    2. Move shared `.env` values into stack vars, component env, declared secrets, or `!secret`

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from cloudposse/atmos at commit 36726ae, republished under its Apache-2.0 licence (© cloudposse). 538 words, ~1,345 tokens.

Download SKILL.mdSave it as .claude/skills/atmos-container/SKILL.md (or your agent's skills folder).
name
atmos-container
description
Atmos container components: components.container, Docker Compose migration, build/run/push/pull/up/down/list/ps/logs/exec, stack-scoped persistent containers, container workflow steps, compositions, and hooks
metadata.copyright
Copyright Cloud Posse, LLC 2026
metadata.version
1.0.0
metadata.category
orchestrators

Atmos Container Components

Use this skill for first-class Atmos containers. A container component is a stack-scoped service: one component maps to one container, with image build/push/pull and optional persistent runtime.

NeedLoad
Grouping services into systemsatmos-compositions
Workflow container stepsatmos-workflows
Lifecycle hooks around componentsatmos-hooks
Local cloud/API emulatorsatmos-emulator
Secret and env migrationatmos-secrets

Component Shape

Define containers under components.container in stack manifests.

yaml
components:
  container:
    api:
      image: ghcr.io/acme/api:latest
      build:
        context: services/api
        dockerfile: Dockerfile
        tags:
          - ghcr.io/acme/api:latest
      run:
        ports:
          - host: 8080
            container: 8080
        command: ./api
      env:
        LOG_LEVEL: info
      composition: app

Container components can participate in hooks, compositions, workflows, and stack-specific config the same way other Atmos component types do.

Relative build.context, build.dockerfile, and run.mounts[].source resolve against the component's own directory — components.container.base_path (default components/container) joined with component:/metadata.component, the same mechanism Terraform/Helmfile/Kubernetes/Helm use — not the directory atmos is invoked from. A component declaring source: is auto-provisioned into a workdir (same JIT support as other component types), and that workdir becomes the anchor instead.

Commands

CommandPurpose
atmos container build <name> -s <stack>Build the component image
atmos container push <name> -s <stack>Push the image to its registry
atmos container pull <name> -s <stack>Pull the image
atmos container run <name> -s <stack>Run one foreground container
atmos container up <name> -s <stack>Create/start the persistent container
atmos container down <name> -s <stack>Stop and remove the persistent container
atmos container ps -s <stack>Show running state
atmos container list -s <stack>List container components and state
atmos container logs <name> -s <stack>Show logs
atmos container exec <name> -s <stack> -- <cmd>Execute inside the container

atmos container also supports attach, restart, start, stop, and rm. Use --dry-run to preview operations.

Workflow Steps

Use the workflow container step type when a workflow should build, run, push, or operate a container as part of orchestration. Use components.container when the container is a reusable stack-scoped component with persistent lifecycle.

Show full SKILL.md (247 more words)Show less

Migrating from Docker Compose

When replacing docker compose with Atmos containers, translate one Compose service at a time into components.container.<service>. Keep multi-service grouping with composition, not by collapsing several services into one container component.

Docker Compose fieldAtmos container mapping
services.<name>.imagecomponents.container.<name>.image
build.context, build.dockerfilebuild.context, build.dockerfile
portsrun.ports
environment, env_fileenv, stack vars, or secrets.vars with !secret
command, entrypointrun.command or the supported runtime command fields
volumesruntime mount settings supported by the container component
depends_onworkflow/composition ordering, readiness checks, wait, or wait-all
Compose project nameshared composition: <name> across related container components

Migration process:

  1. Inventory Compose services and split long-lived services into separate container components.
  2. Move shared .env values into stack vars, component env, declared secrets, or !secret references.
  3. Use composition: <name> so former Compose services validate and run as one system.
  4. Replace docker compose up/down/logs/exec/ps with the matching atmos container commands.
  5. Use workflow container, wait, wait-all, and explicit dependencies for startup order instead of Compose-only depends_on assumptions.
  6. Prefer first-class components.container for Atmos-managed services. Keep a native Compose file only when the project must remain compatible with external Compose tooling.

Operational Guidance

  • Use stack names to isolate container instances.
  • Prefer declared image, build, run, and env blocks over ad hoc shell docker commands.
  • Use composition when a container fulfills a named service in a system.
  • Use hooks for pre/post actions such as scans, artifact publication, or store writes.
  • Use registry auth skills such as atmos-aws-ecr when pushing to private registries.

© cloudposse, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in agent-skills/skills/atmos-container of cloudposse/atmos.

Open the folder on GitHubat commit 36726ae

Compare with similar skills

Atmos Container next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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GreptimeDB Dev Docker ImageGreptimeTeam/greptimedb6.7k—~4kAutomated safety check: NotesApache-2.0
Senior DevOps Toolkitmaslennikov-ig/claude-code-orchestrator-kit2606 repos~1.1kAutomated safety check: NotesCustom licence
LangBot Deployment Guidelangbot-app/LangBot18k—~1.2kAutomated safety check: NotesApache-2.0
Build Openshell Mxc WindowsNVIDIA/OpenShell15k—~4.9kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Atmos Container

What does Atmos Container do?

Atmos container components: components.container, Docker Compose migration, build/run/push/pull/up/down/list/ps/logs/exec, stack-scoped persistent containers, container workflow steps, compositions…. Atmos Container is an agent skill from cloudposse/atmos.

When should I use Atmos Container?

Atmos Container fits situations like: tasks that involve Containers.

How do I install Atmos Container in Claude Code?

Run `npx skills add cloudposse/atmos --skill atmos-container -a claude-code`. Or copy the skill folder (agent-skills/skills/atmos-container in cloudposse/atmos) into .claude/skills/atmos-container in your project. Claude Code loads it when a task matches its description.

How do I install Atmos Container in Codex?

Run `npx skills add cloudposse/atmos --skill atmos-container -a codex`. Or copy the skill folder (agent-skills/skills/atmos-container in cloudposse/atmos) into .agents/skills/atmos-container in your project. Codex loads it when a task matches its description.

Can I use Atmos Container in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add cloudposse/atmos --skill atmos-container -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/atmos-container, .gemini/skills/atmos-container, .github/skills/atmos-container and .opencode/skills/atmos-container in your project.

What does Atmos Container need to run?

Going by SKILL.md and its folder, Atmos Container needs the command-line tools its instructions call (docker). Our summary lists: Docker.

Does Atmos Container access the network?

SKILL.md contains no URLs. Its commands use docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Atmos Container safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Atmos Container use?

Atmos Container is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Atmos Container use?

About 1.3k tokens (SKILL.md is roughly 5.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Atmos Container?

Skills that share tags, products or a category with Atmos Container: Iron Proxy Gateway for NanoClaw (nanocoai/nanoclaw, 31k stars), GreptimeDB Dev Docker Image (GreptimeTeam/greptimedb, 6.7k stars), Senior DevOps Toolkit (maslennikov-ig/claude-code-orchestrator-kit, 260 stars) and LangBot Deployment Guide (langbot-app/LangBot, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Atmos Container?

cloudposse (a GitHub organization) maintains it in cloudposse/atmos, which has 1,396 GitHub stars. The repository holds 70 skills in this directory. The repository was last updated on October 8, 2026.

Source: cloudposse/atmos on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.