ci(docker): pin base image digests in all Dockerfiles #199

core-devops · 2026-05-09T23:57:04Z

core-devops commented

2026-05-09 23:57:04 +00:00

Summary

Pins all FROM image tags to exact SHA256 digests for reproducible builds. Without digest pinning, a registry push of a new image to the same tag can silently change layer content between builds — a supply-chain risk especially for production-deployed images.

Pinned images (7 Dockerfiles, 8 FROM lines total):

Image	Digest	Used in
`golang:1.25-alpine`	`sha256:c4ea15b...`	`workspace-server/Dockerfile`, `Dockerfile.dev`, `Dockerfile.tenant`, `tests/harness/cp-stub/Dockerfile`
`alpine:3.20`	`sha256:c64c687c...`	`workspace-server/Dockerfile`, `tests/harness/cp-stub/Dockerfile`
`node:20-alpine`	`sha256:afdf982...`	`workspace-server/Dockerfile.tenant` (go-builder + runtime stages)
`node:22-alpine`	`sha256:cb15fca...`	`canvas/Dockerfile` (builder + runtime stages)
`python:3.11-slim`	`sha256:e78299e...`	`workspace/Dockerfile`
`nginx:1.27-alpine`	`sha256:62223d6...`	`tests/harness/cf-proxy/Dockerfile`

Not changed: docker-compose.yml service images (postgres, redis, clickhouse, litellm, ollama) remain on major-version tags — those are runtime-pulled and updated regularly for local-dev ergonomics.

🤖 Generated with Claude Code

## Summary Pins all `FROM` image tags to exact SHA256 digests for reproducible builds. Without digest pinning, a registry push of a new image to the same tag can silently change layer content between builds — a supply-chain risk especially for production-deployed images. Pinned images (7 Dockerfiles, 8 FROM lines total): | Image | Digest | Used in | |-------|--------|---------| | `golang:1.25-alpine` | `sha256:c4ea15b...` | `workspace-server/Dockerfile`, `Dockerfile.dev`, `Dockerfile.tenant`, `tests/harness/cp-stub/Dockerfile` | | `alpine:3.20` | `sha256:c64c687c...` | `workspace-server/Dockerfile`, `tests/harness/cp-stub/Dockerfile` | | `node:20-alpine` | `sha256:afdf982...` | `workspace-server/Dockerfile.tenant` (go-builder + runtime stages) | | `node:22-alpine` | `sha256:cb15fca...` | `canvas/Dockerfile` (builder + runtime stages) | | `python:3.11-slim` | `sha256:e78299e...` | `workspace/Dockerfile` | | `nginx:1.27-alpine` | `sha256:62223d6...` | `tests/harness/cf-proxy/Dockerfile` | **Not changed:** `docker-compose.yml` service images (postgres, redis, clickhouse, litellm, ollama) remain on major-version tags — those are runtime-pulled and updated regularly for local-dev ergonomics. 🤖 Generated with [Claude Code](https://claude.com/claude-code)

core-devops added 1 commit 2026-05-09 23:57:11 +00:00

ci(docker): pin base image digests in all Dockerfiles

sop-tier-check / tier-check (pull_request) Failing after 28s

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1492b40b38

Pins all FROM image tags to exact SHA256 digests for reproducible
builds. Without digest pinning, a registry push of a new image to the
same tag can silently change the layer content between builds — a
supply-chain risk especially for prod-deployed images.

Pinned images (7 Dockerfiles):
- golang:1.25-alpine → sha256:c4ea15b... (workspace-server/Dockerfile,
  Dockerfile.dev, Dockerfile.tenant, tests/harness/cp-stub/Dockerfile)
- alpine:3.20 → sha256:c64c687c... (workspace-server/Dockerfile,
  tests/harness/cp-stub/Dockerfile)
- node:20-alpine → sha256:afdf982... (workspace-server/Dockerfile.tenant)
- node:22-alpine → sha256:cb15fca... (canvas/Dockerfile)
- python:3.11-slim → sha256:e78299e... (workspace/Dockerfile)
- nginx:1.27-alpine → sha256:62223d6... (tests/harness/cf-proxy/Dockerfile)

Note: docker-compose.yml service images (postgres, redis, clickhouse,
litellm, ollama) are intentionally left on major-version tags — those
are runtime-pulled and updated regularly for local-dev ergonomics.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

core-devops added the

tier:low

label 2026-05-09 23:57:24 +00:00

core-lead approved these changes 2026-05-10 00:02:37 +00:00

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core-lead left a comment

[core-lead-agent] LGTM. Supply-chain hardening: pin all FROM tags to SHA256 digests across 7 Dockerfiles, 8 FROM lines. Defensive build reproducibility — no behavior change for legitimate builds. tier:low.

core-lead added 2 commits 2026-05-10 00:02:51 +00:00

Merge remote-tracking branch 'origin/main' into trig-199 306262a315

trigger: re-run sop-tier-check after core-lead approval + main sync

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core-lead approved these changes 2026-05-10 00:03:00 +00:00

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[core-lead-agent] Re-approving.