// Reproduce and debug CI failures locally using Docker. Use when a CI job fails but tests pass locally, especially for Linux-specific issues (VSCode extension tests with xvfb, Go tests on Linux). Builds a container matching the CI environment defined in .github/workflows/ci.yml.
| name | debug-ci |
| description | Reproduce and debug CI failures locally using Docker. Use when a CI job fails but tests pass locally, especially for Linux-specific issues (VSCode extension tests with xvfb, Go tests on Linux). Builds a container matching the CI environment defined in .github/workflows/ci.yml. |
Reproduce CI test failures locally using a Docker container that mirrors the CI environment.
Reference: .github/workflows/ci.yml
| CI Job | Runner | Key Tools | Docker Reproducible? |
|---|---|---|---|
| Test Go | Ubuntu / Windows / macOS | Go, Node | Yes (Linux) |
| Lint&Check | Ubuntu | Go, Node, golangci-lint | Yes |
| Test npm packages | Ubuntu / Windows | Go, Node, xvfb | Yes (Linux) |
| Test WASM | Ubuntu | Go, Node | Yes |
| Test Rust | macOS | Rust, Go, Node | No (macOS only) |
| Build Website | Ubuntu | Node | Yes |
gh pr checks <PR_NUMBER>
Fetch detailed failure logs:
# Find failed job IDs
gh api repos/web-infra-dev/rslint/actions/runs/<RUN_ID>/jobs \
--jq '.jobs[] | select(.conclusion == "failure") | {name, id}'
# Get logs for a specific job
gh api repos/web-infra-dev/rslint/actions/jobs/<JOB_ID>/logs
Check current tool versions from CI config before building:
| Tool | Version Source |
|---|---|
| Go | .github/workflows/ci.yml → go-version matrix (currently 1.25.0) |
| Node | .github/actions/setup-node/action.yml → node-version (currently 24) |
| xvfb + GUI deps | .github/workflows/ci.yml → test-node job → "Install xvfb and dependencies" step |
| golangci-lint | .github/workflows/ci.yml → lint job → golangci-lint-action version (currently v2.4.0) |
Write a Dockerfile. The apt packages for xvfb must match the CI step in test-node:
# From CI: sudo apt install -y libasound2 libgbm1 libgtk-3-0 libnss3 xvfb
Additional GUI dependencies (libxss1, libatk-bridge2.0-0, etc.) are needed for VSCode Electron to run headlessly — they are implicit in the CI runner image but not in bare ubuntu:22.04.
Complete Dockerfile:
FROM ubuntu:22.04
ENV DEBIAN_FRONTEND=noninteractive
ENV GOMAXPROCS=8
# Base tools
RUN apt-get update && apt-get install -y \
curl wget git build-essential \
&& rm -rf /var/lib/apt/lists/*
# xvfb and GUI deps (from ci.yml test-node job + Electron implicit deps)
RUN apt-get update && apt-get install -y \
libasound2 libgbm1 libgtk-3-0 libnss3 xvfb \
libxss1 libatk-bridge2.0-0 libdrm2 libxcomposite1 libxdamage1 libxrandr2 \
libpango-1.0-0 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 \
libgcc1 libglib2.0-0 libnspr4 libpangocairo-1.0-0 libstdc++6 libx11-6 \
libx11-xcb1 libxcb1 libxcursor1 libxfixes3 libxi6 libxrender1 libxtst6 \
ca-certificates fonts-liberation lsb-release xdg-utils \
&& rm -rf /var/lib/apt/lists/*
# Go (version from ci.yml go-version matrix)
RUN curl -fsSL https://go.dev/dl/go1.25.0.linux-amd64.tar.gz | tar -C /usr/local -xz
ENV PATH="/usr/local/go/bin:${PATH}"
ENV GOPATH="/root/go"
ENV PATH="${GOPATH}/bin:${PATH}"
# Node (version from .github/actions/setup-node/action.yml)
RUN curl -fsSL https://deb.nodesource.com/setup_24.x | bash - \
&& apt-get install -y nodejs \
&& rm -rf /var/lib/apt/lists/*
# pnpm (from .github/actions/setup-node/action.yml: corepack enable)
RUN corepack enable
# golangci-lint (version from ci.yml lint job → golangci-lint-action)
RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh \
| sh -s -- -b /usr/local/bin v2.4.0
WORKDIR /workspace
Build:
docker build -t rslint-ci-test <dockerfile-dir>
Choose the test script based on which CI job failed:
Test npm packages (Linux) — the most common scenario requiring Docker reproduction:
#!/bin/bash
set -e
cd /workspace
rm -rf node_modules packages/*/node_modules
find . -name '.vscode-test' -type d -exec rm -rf {} + 2>/dev/null || true
pnpm install --frozen-lockfile # .github/actions/setup-node
pnpm format:check # ci.yml test-node "Format" (Linux only)
pnpm run build # ci.yml test-node "Build" step
pnpm run lint --format github # ci.yml test-node "Dogfooding" (Linux only)
pnpm typecheck # ci.yml test-node "TypeCheck" (Linux only)
xvfb-run -a pnpm run test # ci.yml test-node "Test on Linux" step
Lint&Check:
#!/bin/bash
set -e
cd /workspace
rm -rf node_modules packages/*/node_modules
pnpm install --frozen-lockfile
golangci-lint run --timeout=5m ./cmd/... ./internal/... # ci.yml lint "golangci-lint"
npm run lint:go # ci.yml lint "go vet"
npm run format:go # ci.yml lint "go fmt"
pnpm check-spell # ci.yml lint "Check Spell"
Test Go (Linux):
#!/bin/bash
set -e
cd /workspace
go test -parallel 8 ./internal/... # ci.yml test-go "Unit Test"
Test WASM:
#!/bin/bash
set -e
cd /workspace
rm -rf node_modules packages/*/node_modules
pnpm install --frozen-lockfile
pnpm --filter '@rslint/core' build:js
pnpm --filter '@rslint/wasm' build # ci.yml test-wasm "Build"
Build Website:
#!/bin/bash
set -e
cd /workspace
rm -rf node_modules packages/*/node_modules
pnpm install --frozen-lockfile
pnpm run build:website # ci.yml website "Build"
docker run --rm \
-v <project-root>:/workspace \
-v <test-script>:/run-test.sh:ro \
rslint-ci-test bash /run-test.sh
Docker overwrites host node_modules and Go binaries with Linux versions. Always restore after testing:
pnpm install
cp / rsync the project inside the container — use a bind mount directlypnpm install after testing to restore