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Colima Docker Setup

skill-stuffbucket-skills-colima-docker-setup · by stuffbucket

Set up Docker, docker compose, and docker buildx on macOS using Colima. Use when Docker Desktop is not available, Colima needs install or config, docker compose v2 plugin is missing, x86_64 emulation via Rosetta is needed on Apple Silicon, or diagnosing socket errors and slow x64 containers.

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Install

$ agentstack add skill-stuffbucket-skills-colima-docker-setup

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

Colima Docker Setup

Set up Docker CLI + compose + buildx on macOS using Colima as the container runtime.

Quick Setup

Run the bundled setup script — it is idempotent:

bash /scripts/setup.sh

This performs all steps: install, plugin symlinks, Colima start, verify.

Individual Steps

bash /scripts/setup.sh install   # brew install colima docker docker-compose docker-buildx
bash /scripts/setup.sh plugins   # symlink compose + buildx as docker CLI plugins
bash /scripts/setup.sh colima    # create and start the default profile
bash /scripts/setup.sh verify    # check everything works
bash /scripts/setup.sh status    # alias for verify
bash /scripts/setup.sh stop      # stop the Colima VM

Configuration via Environment Variables

| Variable | Default | Purpose | | ---------- | --------- | --------- | | COLIMA_CPUS | 4 | VM CPU count | | COLIMA_MEMORY | 8 | VM memory (GiB) | | COLIMA_DISK | 100 | VM disk (GiB) | | COLIMA_PROFILE | default | Colima profile name | | COLIMA_VM_TYPE | vz | VM type (vz or qemu) |

Example with custom resources:

COLIMA_MEMORY=16 COLIMA_CPUS=8 bash /scripts/setup.sh

Colima Default Template

To persist defaults across all future colima start invocations:

mkdir -p ~/.colima/_templates
cp /assets/colima-template.yaml ~/.colima/_templates/default.yaml

Edit ~/.colima/_templates/default.yaml to customize. CLI flags override template values.

Key Facts

  • vz + Rosetta (Apple Virtualization Framework) is required for performant x86_64 containers on ARM64 Macs. Without Rosetta, QEMU emulation is ~10x slower.
  • docker compose (v2 plugin syntax with space) requires the compose binary symlinked into ~/.docker/cli-plugins/. The setup script handles this.
  • DOCKER_HOST should be unix://$HOME/.colima/default/docker.sock — Colima sets this automatically when --activate is used.
  • virtiofs is the fastest mount type with vz. $HOME is mounted writable by default.

Troubleshooting

Read /references/troubleshooting.md for common issues: socket errors, missing compose plugin, slow x64 containers, VM startup failures, disk full, port conflicts.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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