Jholhewres Devclaw Skills Docker Compose

Docker Compose Advanced

Use the bash tool for advanced Compose workflows. Modern Docker includes Compose as a plugin: use docker compose (with space), not docker-compose.

Setup

1. Check if installed:

   command -v docker && docker --version && docker compose version
   

2. Install:

   # macOS
   brew install docker
   
   # Ubuntu / Debian (see https://docs.docker.com/engine/install/ubuntu/)
   sudo apt update && sudo apt install -y ca-certificates curl
   sudo install -m 0755 -d /etc/apt/keyrings
   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
   sudo chmod a+r /etc/apt/keyrings/docker.gpg
   echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
   sudo apt update && sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
   

Profiles & Environment

docker compose --profile debug up -d
docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d
docker compose --env-file .env.staging up -d

Scaling & Health

docker compose up -d --scale worker=3
docker compose ps --format json | jq '.[] | {Name, State, Health}'
docker compose top

Networking

docker network ls
docker network inspect <network>
docker compose exec <service> ping <other-service>

Tips

• Use profiles for dev/staging/prod separation
• Use multiple compose files for environment overrides
• Always check health status after scaling

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