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ci: publish website Docker image to GHCR; standalone compose - #2
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Adds .github/workflows/docker.yml which builds the website on every push to main and every v* tag, pushes it to ghcr.io/IamCoder18/synapse-website, and tags it: - latest (on main) - 0.3.1 / 0.3 (on each v* tag, syncing with the Maven/Java release) - <short-sha> (every commit, for reproducibility) The image is multi-arch (linux/amd64 + linux/arm64) and uses GHA cache. PRs from any branch run the same build with push: false so the recipe stays exercised without writing to the registry. Build configuration lives in website/docker-bake.hcl (the build target, platforms, Dockerfile path) so the Dockerfile, tags, cache, and platform declarations stay co-located with the website source. website/docker-compose.yaml now references the prebuilt image and drops the build context. It works standalone — no checkout required — and accepts SYNAPSE_SITE_IMAGE for pinning. A copy of the same compose file is added at the repo root (docker-compose.yaml) with a comment header explaining usage, so the recipe is reachable from a single file copy. website/DOCKER.md documents image layout, tag strategy, and how to override the image or build it locally with docker buildx bake.
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📝 WalkthroughWalkthroughThe PR adds root-context Docker builds for the website, multi-platform Bake targets, GitHub Actions workflows for GHCR publication, and Compose configurations that run the published image with health checks. ChangesWebsite container delivery
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The publishing workflow can replace Sequence Diagram(s)sequenceDiagram
participant GitHubActions
participant DockerBake
participant GHCR
participant DockerCompose
participant WebsiteContainer
GitHubActions->>DockerBake: Build the website image
DockerBake->>GHCR: Push published image
DockerCompose->>GHCR: Pull selected image tag
GHCR-->>DockerCompose: Return website image
DockerCompose->>WebsiteContainer: Start container on port 8080
WebsiteContainer-->>DockerCompose: Report /healthz status
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Code Review SummaryStatus: No Issues Found | Recommendation: Merge Files Reviewed (1 file)
Previous Review Summaries (6 snapshots, latest commit 1931059)Current summary above is authoritative. Previous snapshots are kept for context only. Previous review (commit 1931059)Status: No Issues Found | Recommendation: Merge Files Reviewed (1 file)
Previous review (commit 2c69a4a)Status: 1 Issue Found | Recommendation: Address before merge Overview
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Fix these issues in Kilo Cloud Previous review (commit 0bc2e92)Status: 4 Issues Found | Recommendation: Address before merge Overview
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…, doc links
- .github/workflows/docker.yml (build-pr job): the bake-action step had
'source', 'files', 'targets', 'push', 'cache-from' all at the same
indentation as 'with:' (8 spaces), leaving the with: block effectively
empty. Re-indent them under with: so the PR build actually exercises
the bake target instead of falling back to defaults.
- .github/workflows/docker.yml env: switch IMAGE_NAME to
github.repository_owner (always lowercase) so the published package
name matches the docker-compose reference ('ghcr.io/iamcoder18/...').
GHCR resolves either case to the same package; this is purely about
consistency between docs, compose, and the registry path.
- website/docker-compose.yaml + docker-compose.yaml: add start_period:
10s to the healthcheck so a cold pull from GHCR plus nginx cold start
doesn't mark the container unhealthy before the first real probe.
- website/DOCKER.md: relative links in the 'See ...' footer pointed at
'./website/...' which resolved to a non-existent 'website/website/...'
path. Fix them to './Dockerfile', './nginx.conf', './docker-bake.hcl'.
The previous docker.yml used 'cache-from' / 'cache-to' as bake-action inputs (they're not valid — the action warned: valid inputs are ['builder', 'source', 'allow', 'files', 'workdir', 'targets', ...]). Cache config belongs inside the bake target. It also set 'files: | website/docker-bake.hcl' alongside 'source: website', which produced 'docker buildx bake --file website/docker-bake.hcl --file website' and failed with 'read website: is a directory'. Bake file paths are resolved relative to 'source', so when source is 'website' the file is 'docker-bake.hcl'. Local dry-run confirms the new config produces a valid bake plan: cache-from and cache-to are now inside the 'synapse-website' target, platforms = linux/amd64 + linux/arm64, and the Dockerfile path is resolved correctly. Also rewords the IMAGE_NAME comment — github.repository_owner preserves the owner's display case; the lowercase spelling in the compose files is purely for readability, since GHCR resolves package lookups case-insensitively at the storage layer.
Two fixes:
1. The push and PR jobs were sharing the same bake target, so the PR
job was also exporting cache via 'cache-to = type=gha,mode=max'.
Fork PRs lack permission to write to the GHA cache, which would fail
the required build check. Split the bake file into two targets:
- synapse-website: full config including cache-to (push job)
- synapse-website-pr: same minus cache-to (PR job)
2. The workflow passed 'source: website' to bake-action plus a relative
file path 'docker-bake.hcl', but bake-action runs docker buildx from
the action's working directory (the repo root) and does not change
cwd when 'source' is set — 'source' only maps to --context. So
'docker-bake.hcl' resolved against the repo root and didn't exist.
Drop 'source' from both jobs and use the full relative path
'website/docker-bake.hcl' in 'files'. Each target now sets its own
context = 'website', so --context is still correct.
Also dropped metadata-action's bake-file output from the bake inputs;
tags and labels are already passed directly via the action's
'tags' / 'labels' inputs, so the second --file was redundant.
Verified locally:
docker buildx bake --file website/docker-bake.hcl --print synapse-website
docker buildx bake --file website/docker-bake.hcl --print synapse-website-pr
both produce the expected plans from the repo root.
The website/src/lib/changelog.ts parser reads CHANGELOG.md from the repo root at build time. With the bake target's context set to 'website/', the Dockerfile's 'COPY . .' only copies website/* into the image, so CHANGELOG.md was missing and the changelog page failed with: ENOENT: no such file or directory, open '/CHANGELOG.md' Two changes: - website/docker-bake.hcl: change context to '.' (the repo root) for both 'synapse-website' and 'synapse-website-pr'. The Dockerfile path becomes 'website/Dockerfile' (relative to the new context). - website/Dockerfile: rebuild against the repo-root context. mkdir website/, copy website/package.json first for cache, copy the rest of website/, then copy CHANGELOG.md to /app/CHANGELOG.md so the parser's import.meta.url-relative path resolution lands on the right file. All npm commands run from /app/website/. Local verification: docker build --platform linux/amd64 -f website/Dockerfile . produces an image that runs docker run -p 8080:8080 and serves both /healthz (200, 'ok') and /changelog/ (200, 19058 bytes) without errors.
After broadening the bake target context from 'website/' to '.' in the previous commit (so the repo-root CHANGELOG.md is available to the Dockerfile), BuildKit reads .dockerignore from the repo root instead of website/. Without one, every docker buildx bake invocation ships the entire repo to the BuildKit daemon: .git (3.3 MB), website/node_modules (314 MB), .gradle/, etc. Add a repo-root .dockerignore that mirrors the previous website/.dockerignore exclusions and adds the Java/Gradle build outputs, editor noise, CI config, and docs that don't need to ship in the image. CHANGELOG.md is the one markdown exception — it must be visible so the changelog parser can read it at build time. Verified with docker build --no-cache: build context transfer is 8.18 KB instead of hundreds of MB.
The bake targets use context='.' and dockerfile='website/Dockerfile', so BuildKit must read the Dockerfile from the repo-root build context. The previous .dockerignore excluded it, which would have broken every bake invocation with 'failed to compute cache key ... not found'. Re-include website/Dockerfile with the negation pattern and add a comment explaining why. website/docker-compose.yaml and website/docker-bake.hcl are still safe to exclude — neither file is read by BuildKit during the bake.
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Inline comments:
In @.github/workflows/docker.yml:
- Around line 3-9: Add workflow-level concurrency keyed by github.ref in the
Docker workflow, with cancel-in-progress enabled, so a newer run cancels any
earlier run for the same branch or tag before publishing latest.
- Line 33: Update the GitHub Actions workflow so every action reference,
including actions/checkout, uses a reviewed full 40-character commit SHA instead
of a mutable tag, while retaining the corresponding release version in an
adjacent comment.
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📒 Files selected for processing (7)
.dockerignore.github/workflows/docker.ymldocker-compose.yamlwebsite/DOCKER.mdwebsite/Dockerfilewebsite/docker-bake.hclwebsite/docker-compose.yaml
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🧰 Additional context used
🪛 Checkov (3.3.11)
website/Dockerfile
[low] 1-27: Ensure that a user for the container has been created
(CKV_DOCKER_3)
🪛 Hadolint (2.15.1)
website/Dockerfile
[warning] 11-11: Use WORKDIR to switch to a directory
(DL3003)
[info] 11-11: Note that A && B || C is not if-then-else. C may run when A is true.
(SC2015)
[warning] 15-15: Use WORKDIR to switch to a directory
(DL3003)
[warning] 24-24: Use arguments JSON notation for CMD and ENTRYPOINT arguments
(DL3025)
🪛 LanguageTool
website/DOCKER.md
[grammar] ~15-~15: Use a hyphen to join words.
Context: ... for reproducibility ## Run with docker compose Copy docker-compose.yaml to a...
(QB_NEW_EN_HYPHEN)
[uncategorized] ~50-~50: The official name of this software platform is spelled with a capital “H”.
Context: ...cally (optional) The image is built by .github/workflows/docker.yml. To build it your...
(GITHUB)
🪛 markdownlint-cli2 (0.23.2)
website/DOCKER.md
[warning] 5-5: Fenced code blocks should have a language specified
(MD040, fenced-code-language)
🪛 Trivy (0.74.0)
website/Dockerfile
[warning] 11-11: 'RUN cd ...' to change directory
RUN should not be used to change directory: 'cd website && npm ci --no-audit --no-fund || npm install --no-audit --no-fund'. Use 'WORKDIR' statement instead.
Rule: DS-0013
(IaC/Dockerfile)
[warning] 15-15: 'RUN cd ...' to change directory
RUN should not be used to change directory: 'cd website && npm run build'. Use 'WORKDIR' statement instead.
Rule: DS-0013
(IaC/Dockerfile)
🪛 zizmor (1.29.0)
.github/workflows/docker.yml
[warning] 32-33: credential persistence through GitHub Actions artifacts (artipacked): does not set persist-credentials: false
(artipacked)
[warning] 78-79: credential persistence through GitHub Actions artifacts (artipacked): does not set persist-credentials: false
(artipacked)
[warning] 1-93: overly broad permissions (excessive-permissions): default permissions used due to no permissions: block
(excessive-permissions)
[error] 33-33: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 36-36: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 39-39: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 47-47: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 58-58: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 79-79: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 82-82: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[error] 85-85: unpinned action reference (unpinned-uses): action is not pinned to a hash (required by blanket policy)
(unpinned-uses)
[warning] 30-30: permissions without explanatory comments (undocumented-permissions): needs an explanatory comment
(undocumented-permissions)
[warning] 3-9: insufficient job-level concurrency limits (concurrency-limits): workflow is missing concurrency setting
(concurrency-limits)
🔇 Additional comments (6)
.dockerignore (1)
1-27: LGTM!Also applies to: 30-52
website/Dockerfile (1)
4-5: LGTM!Also applies to: 9-10, 12-15, 20-21, 24-24
website/docker-bake.hcl (1)
1-21: LGTM!Also applies to: 25-29
website/DOCKER.md (1)
1-4: LGTM!Also applies to: 6-52, 56-60
docker-compose.yaml (1)
1-35: LGTM!website/docker-compose.yaml (1)
1-8: LGTM!Also applies to: 12-12, 21-21
Three security/operability fixes from the round-4 review: 1. Concurrency: a workflow-level concurrency group keyed by github.ref with cancel-in-progress: true ensures a newer push to the same ref cancels any older run before it can publish. Two simultaneous pushes to main no longer race to write 'latest', and the older job can't move the tag backward if it finishes after the newer one. 2. Pin every GitHub Action to its full 40-character commit SHA with the release version retained in an inline comment. Mutable refs (e.g. @v4) can be retargeted; pinning prevents a compromised upstream from injecting code into a job that has packages: write. SHAs taken from the GitHub API for: actions/checkout @ v4.2.2 -> 11bd71901bbe5b1630ceea73d27597364c9af683 docker/setup-buildx-action @ v3.10.0 -> b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 docker/login-action @ v3.4.0 -> 74a5d142397b4f367a81961eba4e8cd7edddf772 docker/metadata-action @ v5.7.0 -> 902fa8ec7d6ecbf8d84d538b9b233a880e428804 docker/bake-action @ v5.7.0 -> 76cc8060bdff6d632a465001e4cf300684c5472c 3. Default permissions set to 'contents: read' at the workflow level. The push job elevates to 'packages: write' locally. Also set persist-credentials: false on the checkout steps so the GITHUB_TOKEN isn't left in the local git config (zizmor's artipacked check).
1 participant
Summary
Publishes the Synapse website as a prebuilt Docker image at GitHub Container Registry (
ghcr.io/IamCoder18/synapse-website) and ships a standalonedocker-compose.yamlthat pulls it — no source checkout required to run the site.What's in this PR
.github/workflows/docker.ymlmainand everyv*tag, and runs a build-only check on PRswebsite/docker-bake.hclwebsite/docker-compose.yamlbuild:context, acceptsSYNAPSE_SITE_IMAGEoverride for pinningdocker-compose.yamlwebsite/DOCKER.mdTag strategy
:latest— updated on every merge tomain:0.3.1,:0.3— updated on everyv*Git tag (synced with the Maven/Java package release):<short-sha>— every commit, for reproducibilityImage contents (unchanged from PR #1)
node:lts-alpinebuild stage compiles the Astro site todist/.nginx:alpineruntime serves on port8080with the customnginx.conffromwebsite/(immutable cache for hashed assets, revalidatable cache for HTML, gzip for text,Linkheaders for AI endpoints,=404fallback)./healthzreturns200 okfor compose healthchecks.Standalone usage
Pin a version:
Build verification
The image builds multi-arch (
linux/amd64,linux/arm64) with GHA cache. PRs rundocker buildx bake synapse-website --push=falseso the recipe stays exercised without writing to the registry. Tagged runs and main pushes publish to GHCR usingsecrets.GITHUB_TOKENwithpackages: write.Out of scope
ci.ymlMaven step is untouched).