overthinkos/githubrunner
ov-foundation/skills/githubrunner/SKILL.md
Self-hosted GitHub Actions runner with the full Overthink toolchain. Rootless-first since 2026-04 — runs as uid=1000 with passwordless sudo (no root, no cap_add: ALL). Host networking retained for reachability. MUST be invoked before building, deploying, configuring, or troubleshooting the githubrunner image.
tools
Updated May 4, 2026
$ install --global
skillsauthnpx skillsauth add overthinkos/overthink-plugins githubrunnerInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: May 4, 2026, 6:16 AM123.1s1 file scanned
SKILL.md
- name:
- githubrunner
- description:
- |
- (no root, no cap_add:
- ALL). Host networking retained for reachability.
githubrunner
Self-hosted GitHub Actions runner with the full Overthink toolchain.
Shares the rootless-first posture with /ov-foundation:fedora-ov,
/ov-coder:arch-ov, and /ov-coder:fedora-coder.
Image Properties
| Property | Value | |----------|-------| | Base | fedora | | Layers | agent-forwarding, github-runner, ov-full, dbus | | Platforms | linux/amd64 | | UID / user | 1000 / user (rootless-first since 2026-04) | | Network | host | | Security | layer-level only | | Registry | ghcr.io/overthinkos |
Full Layer Stack
fedora(quay.io/fedora/fedora:43)- Transitive (via
ov-full):ov+virtualization+gocryptfs+socat github-runner— Actions runner agent, skopeo, podman, buildahdbus— session bus (for runner hooks)
Rootless-first posture (2026-04 refactor)
Previously ran as uid: 0 / user: root with cap_add: [ALL] +
security_opt: [label=disable, seccomp=unconfined]. That legacy
posture was dropped once the /ov-foundation:container-nesting kernel
RCA proved surgical unmask=/proc/* works without caps. See
/ov-foundation:fedora-ov for the full rationale and
/ov-foundation:container-nesting for the mount_too_revealing() RCA.
The /ov-foundation:github-runner layer and runner-hook scripts still
invoke sudo where they genuinely need root (e.g. for system-level
docker setup). Passwordless sudo is provided indirectly — if you
need it for your workflows, compose /ov-coder:sshd into the
layer list (it installs /etc/sudoers.d/ov-user).
Nested container support
Unlike /ov-foundation:fedora-ov and /ov-coder:arch-ov, githubrunner
does NOT compose /ov-foundation:container-nesting directly. Nested
rootless podman works only via ov-full's transitive dependency
chain. If your Actions workflows need first-class rootless nested
containers (with /dev/fuse + unmask=/proc/* security opts), add
container-nesting to the layer list explicitly.
For most CI workloads that spawn containers via docker/podman against the host socket (host networking covers it), the current composition is enough.
Registration
ov config githubrunner -e RUNNER_ORG=myorg -e RUNNER_TOKEN=<token>
# post_enable hook runs config.sh --unattended
Removal deregisters via pre_remove hook:
ov remove githubrunner -e RUNNER_TOKEN=<token>
Lifecycle
ov image build githubrunner
ov config githubrunner -e RUNNER_ORG=myorg -e RUNNER_TOKEN=<token>
ov start githubrunner
ov stop githubrunner
ov remove githubrunner -e RUNNER_TOKEN=<token>
Key Layers
/ov-foundation:github-runner— runner agent, hooks, security config/ov-coder:ov-full— ov + virtualization + gocryptfs + socat/ov-foundation:virtualization— QEMU/KVM + rootless libvirt session daemon/ov-foundation:container-nesting— not composed here by default (add if workflows need first-class rootless nested containers)
Related Images
/ov-foundation:fedora— parent base/ov-foundation:fedora-ov— sibling uid=1000 ov toolchain (includescontainer-nestingdirectly)/ov-coder:arch-ov— Arch counterpart of fedora-ov/ov-coder:fedora-coder— kitchen-sink dev image sharing the same security posture/ov-selkies:selkies-desktop-ov— non-desktop alternative streaming-desktop with the same rootless posture
Related Commands
/ov-core:config— deploy setup with RUNNER_ORG / RUNNER_TOKEN/ov-core:start,/ov-core:stop,/ov-core:remove— lifecycle + pre-remove deregistration/ov-core:status,/ov-core:logs— verify runner is idle + troubleshoot
Verification
After ov start:
ov status githubrunner— container runningov service status githubrunner— all services RUNNINGov shell githubrunner -c "id"— uid=1000(user)- Check runner appears as "Idle" in GitHub org/repo Settings > Actions > Runners
When to Use This Skill
MUST be invoked when the task involves the githubrunner image, self-hosted runners, or GitHub Actions CI/CD. Invoke this skill BEFORE reading source code or launching Explore agents.
Related
/ov-build:image— image family umbrella (image:entries inoverthink.yml, build/validate/inspect/list)/ov-build:build—build.ymlvocabulary (distros, builders, init-systems)
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