# Nextflow Pipelines Docker Issues

> Sub-skill of nextflow-pipelines: Docker issues (+2).

- Skill: `vamseeachanta/nextflow-pipelines-docker-issues` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/nextflow-pipelines-docker-issues`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/nextflow-pipelines-docker-issues/raw
- Safety review: WARNING (external: skill-scanner PASS, skillspector WARNING)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/nextflow-pipelines-docker-issues

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# Docker issues (+2)

## Docker issues


| Problem | Fix |
|---------|-----|
| Not installed | Install from https://docs.docker.com/get-docker/ |
| Permission denied | `sudo usermod -aG docker $USER` then re-login |
| Daemon not running | `sudo systemctl start docker` |

## Nextflow issues


| Problem | Fix |
|---------|-----|
| Not installed | `curl -s https://get.nextflow.io \| bash && mv nextflow ~/bin/` |
| Version < 23.04 | `nextflow self-update` |

## Java issues


| Problem | Fix |
|---------|-----|
| Not installed / < 11 | `sudo apt install openjdk-11-jdk` |

**Do not proceed until all checks pass.** For HPC/Singularity, see [references/troubleshooting.md](references/troubleshooting.md).

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