# Ops Docker

> Docker and Docker Compose containerization. Trigger when the user wants to dockerize an application or create containers.

- **Type:** Skill
- **Install:** `agentstack add skill-christopherlouet-claude-base-ops-docker`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [christopherlouet](https://agentstack.voostack.com/s/christopherlouet)
- **Installs:** 0
- **Category:** [Cloud & Infrastructure](https://agentstack.voostack.com/c/cloud-infrastructure)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [christopherlouet](https://github.com/christopherlouet)
- **Source:** https://github.com/christopherlouet/claude-base/tree/main/.claude/skills/ops-docker
- **Website:** https://christopherlouet.github.io/claude-base/

## Install

```sh
agentstack add skill-christopherlouet-claude-base-ops-docker
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Docker Containerization (pointer)

Dockerfile syntax, Compose schema and image-publish flows drift on each release and are canonical at:

- **Docker official** — [docs.docker.com](https://docs.docker.com) (Engine + Compose + Buildx)
- **Dockerfile best practices** — [docs.docker.com/develop/develop-images/dockerfile_best-practices](https://docs.docker.com/develop/develop-images/dockerfile_best-practices/)
- **Snyk Container Security** — [snyk.io/learn/container-security](https://snyk.io/learn/container-security/) (vulnerability scanning, base-image hardening)
- **Hadolint** — [github.com/hadolint/hadolint](https://github.com/hadolint/hadolint) (Dockerfile linter, CI-integrable)
- **Dive** — [github.com/wagoodman/dive](https://github.com/wagoodman/dive) (image layer analysis)

## Foundation discipline (keep across releases)

- **Multi-stage builds**: always separate build deps from runtime image. The "node:20 with full npm" image weighs 1GB+; the runtime layer should be ~100MB. Build stage produces artifacts, runtime stage copies them in.
- **Non-root user**: `RUN addgroup -S app && adduser -S app -G app && USER app` — never run app code as root inside the container, even if "it's just a sandbox".
- **.dockerignore mandatory**: forgotten `.git/` or `node_modules/` in the build context bloats images by hundreds of MB and leaks secrets. The `.dockerignore` rules mirror your `.gitignore` plus build artifacts.
- **HEALTHCHECK at the Dockerfile level**: not just at the orchestrator level. Lets Docker/Compose detect unhealthy containers before the orchestrator does.
- **Pin base image major+minor** (`node:20-alpine`, not `node:latest` or bare `node:20`): floating tags break reproducibility; SHA pinning is overkill for most apps but worth it for security-critical builds.
- **Secret management**: never `COPY .env` or hardcode credentials in `ENV`. Use BuildKit secrets (`--mount=type=secret`) or runtime-injected env vars from the orchestrator.

## See also

- `/ops:ops-deploy` — deployment checklist consumes the built image
- `/ops:ops-database` — Compose patterns for DB services (`depends_on: { condition: service_healthy }`)
- `qa-security` — image scanning gate (Snyk/Trivy) before push
- `ops-ci` — Hadolint + image scan as CI steps

## Source & license

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

- **Author:** [christopherlouet](https://github.com/christopherlouet)
- **Source:** [christopherlouet/claude-base](https://github.com/christopherlouet/claude-base)
- **License:** MIT
- **Homepage:** https://christopherlouet.github.io/claude-base/

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

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** yes
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-christopherlouet-claude-base-ops-docker
- Seller: https://agentstack.voostack.com/s/christopherlouet
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.